Does Pre-FILLING The Oil FILTER Cause Engine DAMAGE?

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When doing an oil change, it is common practice to change the oil filter as well, but should you pre-fill the oil filter before you install it?
I was taught that you should always pre-fill the oil filter before installing it. However, there are conflicting opinions about this practice on the internet, so we decided to put this to the test. Let's find out if the oil out of the bottle is actually dirtier than the filtered oil going through the engine. Using SPEEDiagnostix to run ISO 4406 cleanliness tests, we measure the cleanliness of the oil right out of the drum and right out of the engine. As always, we are going to rely on the science instead of speculation!
If your oil filter is vertically or horizontally mounted, here's a Short that shows you how to prime the filter before firing the engine: • Oil Change Hack For Ve...
To check out the previous video, here's the link:
Oil Change Video: • AVOID the ONE MISTAKE ...
For more from the Motor Oil Geek, check out • Motor Oil & Lubrication
For more about "Dyno" Don MacAskill, check out www.dynodonnymac.com
For more about Oil Analysis, check out: www.speediagnostix.com
I recommend Wix oil filters, which are available at amzn.to/41lNTSp
Who is the @themotoroilgeek? I'm a Society of Tribologists and Lubrication Engineers Certified Lubrication Specialist and Oil Monitoring Analyst (I've maintained both of those for over a decade). I also worked for Joe Gibbs Racing for 12 years as their lubricant specialist. During that time, we worked with Wix Filters (one of our sponsors) to test and develop filters for our race engines. We also worked with Lubrizol and Chevron-Phillips Chemical to test and develop oils for our race cars. Following that, I was the head of R&D for Driven Racing Oil. During that time, I formulated and tested over 50 products. We also worked with Cummins, Comp Cams, Oak Ridge National Labs and General Motors on various R&D products. Those efforts are recorded in peer reviewed white papers published by SAE International and ACS Sustainable Chemistry journals. I also own and operate SPEEDiagnostix, which provides used oil analysis.
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#oilchange #motoroil #oilfilter

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2 ноя 2023

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Комментарии : 10 тыс.

@themotoroilgeek 6 месяцев назад

If your oil filter is vertically or horizontally mounted, here's a pro tip to prime the filter before starting the engine. ru-vid.comZF-SPAKtzrY?feature=share

@DK-Nachowifi 6 месяцев назад

@themotoroilgeek I've been a auto technician for years and I had a old timer. Tell me that didn't have to fill the oil filter if you did the oil change and no oil in filter. To start the engine and then turn it off and repeat atleast three times. To prime the oil in the system and through filter. I was never sold on not filling the oil filter so, I fill the filter still and then start and then turn engine off atleast three times. I would like to know your thoughts about this. After a oil change and oil in the filter should you start and immediately turn engine off multiple times before running the engine longer to prime the oil in the engine?

@Pighater22 6 месяцев назад

@@DK-Nachowifiturning it off and on does nothing because the oil pump doesn’t run with the vehicle off. But prefilling the filter just insures the system will prime faster, maybe takes a second to two at most. Prefilling the filter is good and can only help. If you can’t cause it’s a horizontal mount then oh well it is what it is.

@mrwebber35 6 месяцев назад

I know for a fact that pre-filling the filter prevents that little slowdown from a fresh oil change from bearings dragging or lifter delayed pump up. I don't know what was causing the engine to have a sort of load on it on the start up but prefilling the filter prevented that. Keep in mind that that I have several V8's with high mileage that did that. The cars I have always owned and have prefilled are a '76 Dodge B200 360C.I., a'79 Camaro 5L, an '88 Ford 5L and a '98 Ford 4.6L. Lets just say all my engines don't burn oil happily without additives well over 100K miles. I only had to hear that lag once for myself to be convinced. I should point out that I was a professionally trained mechanic back in 1989 where my journeyman taught me to always pre-fill the filter.

@themotoroilgeek 6 месяцев назад

@@mrwebber35 Thanks for sharing!

@ec9156 6 месяцев назад

🤣

@frankjones4094 7 месяцев назад

I'm 70 and have been prefilling filters since I was 18, on a tip from a friend. This the first time I've ever heard it questioned. It blows my mind that people think new oil out of the container is contaminated!

@themotoroilgeek 7 месяцев назад

Right?

@jeffgriffith7003 7 месяцев назад

Especially given the fact that many smaller air cooled engine's don’t even have an oil filter, those are critical to start with clean oil.

@DanielSmith-yp7mw 7 месяцев назад

@@jeffgriffith7003 exactly. Great point.

@markaruski 7 месяцев назад

Do these people also filter their new milk from the grocery store before drinking it?

@Truckguy2007 7 месяцев назад

I always prefilled my filters when I had Chevy trucks. Can’t do it on fords.

@MRworldEtIkA 2 месяца назад

"If it came out with oil, then it will go in with oil." - My father

@themotoroilgeek 2 месяца назад

Well said!

@karlpayne9069 Месяц назад

Mad respect to yo Pops😂

@sailormanoyster1849 27 дней назад

@@karlpayne9069i cant listen to this fellow screeching😮

@quanj3349 27 дней назад

that is a killer line from your pop!! Blessings!

@andreetje1964 24 дня назад

@MRworldEtikA; And look; here you are! Right out of your Father That made sense years ago 💪💪💪

@nickcautrell2514 9 дней назад

I will applaud your patience. If someone told me that pre filling the filter with new oil would damage an engine because it hasn't been filtered, there's no way I could be polite. The amount of stupidity in that theory would normally shock me not considering some of the other things going around in not surprised. Nice job on the video

@DavidL-wd5pu 10 дней назад

This was a no-brainer for me. I don't need a study to tell me that the oil that comes out of a new bottle is clean.

@tomscrossthreadgarage4183 6 месяцев назад

I've been a heavy truck and equipment mechanic for 35 years. Today I serviced a Western Star that holds 11 gallons of engine oil. The two oil filters together held 1 1/2 gallons. I can't even imagine not pre-filling them.

@calgreco8607 6 месяцев назад

I can't imagine the bill for the oil change!

@dickjohnson7845 6 месяцев назад

That's a different animal than a daily driver auto. Special applications require different methods.

@danielquilesjr.3461 6 месяцев назад

Right there with you. I always pre fill all vehicles I work on unless not able to.

@Yukanhayt-Mhenow 6 месяцев назад

Watch garage 54 with the transparent oil filter, they fill instantly with the motor turning over!

@ryanstage3912 6 месяцев назад

That's a Centrifugal pump and filter so your comparing a mountain to a couple grains of salt.

@philzellmer6073 7 месяцев назад

As a lifetime pro mechanic and hi-performance geek, I just want to thank you both for going the extra mile to disprove some of the incredibly stupid stuff floating around the internet....you have my deepest respect!

@bobmcgehee1749 7 месяцев назад

Some people like to argue for sake of arguing

@themotoroilgeek 7 месяцев назад

Thanks, I appreciate it. The response to this video is literally mind blowing, LOL

@johno9507 6 месяцев назад

@bobmcgehee1749 What a load of crap, how can you say people like to argue for the sake of it? I want to see proof. 😏

@bobmcgehee1749 6 месяцев назад

@@johno9507 Ok, go look in the mirror.

@johno9507 6 месяцев назад

@@bobmcgehee1749 😉 I couldn't resist

@JakeSpeed116 2 месяца назад

I always pre-fill the filter three times. When I let it sit between fills I can see the level go down as it soaks into the filter material. Thanks for all the great info.

@MrPLC999 3 дня назад

In my experience there is absolutely no benefit to prefilling the filter with oil. Assuming your oil pump is working normally, it will fill that filter in a few seconds and away you go. I've been doing my own oil changes for 50+years and I always keep my cars a long time. Never had a problem. And if your filter is mounted horizontally, how are you going to prefill it???

@zekearchuleta6061 Месяц назад

I spent 50 yrs in the business, Building Engines from small gas to Heavy Duty Diesel, This is a habit I practiced through my career, Filled Filter is the Best way, Excellent Best Practice !

@themotoroilgeek Месяц назад

Thanks for sharing

@billboswell4509 6 месяцев назад

65 years old and changing oil for about 55 years with my dad. We have pre-filled since the first one. Proud to say I’ve paid for only 2 oil changes in my life. I look after the family’s cars.

@JustAGuy85 6 месяцев назад

Same here. Have always done free maintenance on my CLOSE relatives cars (grandmother, rest her soul, my mom, my brother, mine, and my sister when she lived at home when we were all teens. Also the ex and ex-mother in law). I like to get to pick out the oil, though, (either Pennzoil Platinum 5W-30 OR Rotella T6 5W-40, depending on the engine) and always, always tell them to use an AC Delco filter for GM and Motorcraft for Ford. That's just how it's done. I have a 5.0 (the old school one), so I use the giant FL-1A. Mom's 4.6 3v and bro's 4.6 2v and 4v S/C gets the FL-820S. Silicon anti-drainback valve. And then there's a 3800II in the family in a Park Avenue, it gets the AC Delco PF-47... or the PF-47e when there's no PF-47's in sight. I think that's the right one. Haven't seen the plain PF-47 in a long time, really. I just know in my gut that "e" on the PF-47e is for "economy", meaning, economical parts inside of the filter lol.. aka, cheap.

@__WJK__ 6 месяцев назад

@@JustAGuy85 - Hmmm... seems you might be familier with "Project Farm's" youtube channel(!?)

@Yukanhayt-Mhenow 6 месяцев назад

Same here but I never prefilled the filters because the engine fills it the instant you turn the engine over. Garage 54 did a clear one

@user-wv1pj6wh4h 6 месяцев назад

HOW MUCH YOUR ENEGINE DID LAST?

@billboswell7275 6 месяцев назад

@@user-wv1pj6wh4h I usually get over 225,000 miles / 350,000 kms before selling or the body rusts out.

@Cyfi71 7 месяцев назад

This 70 year old always prefills his oil filter and I also concur on being careful not to get any pieces of the seal from the oil jug into the oil. Changing your own oil and filter is also a great time to inspect the engine area and under carriage for any leaks or damage underneath.

@themotoroilgeek 7 месяцев назад

Thanks for sharing

@gregoryclemen1870 7 месяцев назад

you will get a better job by doing it yourself, if you let the quickie lube joints do it, they do not care.

@dennisadorno6721 6 месяцев назад

I think the guys who post comments like that are truly just looking for attention.....There, there my uninformed friend, why bother with a prefill??? Or for that matter why bother changing your oil at all??? It's just a big scam to make the oil companies richer....Ha ha

@JetFire9 6 месяцев назад

With my Jag and Range Rover, the oil is fully changed from the top of the engine.

@tommurphy4307 6 месяцев назад

they do it that way to keep the showroom floors cleaner...@@JetFire9

@gonefilming2020 Месяц назад

I am a master technician, I've been around engines for the past 50 years and I agree FULLY with the practice of pre-filling a new oil filter prior to installing it. Best practice. Where possible (as on your SB Chevy V8). If it's a factory upside down cartridge or sideways mount, you're just out of luck. But looking back at all the engines I have serviced, repaired and diagnosed, there has not been ONE major engine (bearing) failure due to doing scheduled maintenance without pre-filling the filter. It's just moot. The small wear on the babbit of the bearing surfaces during the initial start has no siginificance on the engine lifespan. When all is said and done, major engine failures are caused by overheating, unfrequent oil changes and mechanical failures caused by incorrect fuel / air ratios and other problems causing an upset in normal engine operation outside of manufacturer's specs. This goes for your normal car or light truck engine. Race engines operate at much more demanding specs and other, stricter rules apply. Again, I fully agree with your video content, but the relevance in view of the actual engine life span is not given.

@heightsgolan8742 Месяц назад

my 7.3 diesel pickup has a huge oil filter. It would not be a moot point to run that motor with no oil pressure while waiting on that filter to fill.

@gonefilming2020 Месяц назад

@@heightsgolan8742 It is moot as far as the overall longevity of the engine is concerned - this is from half a century of experience in engine service. But if it eases your mind, you can pre-fill your filter to your heart's content.

@heightsgolan8742 Месяц назад

@@gonefilming2020 eases my mind?? You just admitted " the small amount of wear in start up". So maybe ease your own mind since no oil pressure for several seconds is a moot point and rev the snot out of it before oil pressure. My first rebuild was in 1969 on a car. But many small engines and one motorcycle starting in 1965. So, I have seen much in my OVER 50 years of EXPERIENCE. So many main bearing knocks and rod knocks. Too many to count. So it DOES EASE my mind to see oil pressure right away. I guess you get a thrill out of seeing that red light in the dash stay on as long as possible. Oh yeah, lets purposefully let that 2 qt filter on my diesel slowly fill while the crank is without oil. It don't matter.

@gonefilming2020 Месяц назад

@@heightsgolan8742 Woah, dude. You off your thyroid medication? Of course you also have OVER 50 YEARS EXPERIENCE. And of course your experiences are sliced bread as opposed to mine. Nowhere did I say to "...rev the snot out of it before oil pressure" or that I "get a thrill out of seeing that red light in the dash stay on as long as possible". You did not get the intent of my post. Perhaps read things so many times over, until you can follow the content. Or have someone explain it to you. And it's perfectly o.k. to have a different opinion - no need to discredit others, because only your opinion counts. Perhaps find someone to give you a hug. Everything will be o.k.. Promised. 🤗

@heightsgolan8742 Месяц назад

@@gonefilming2020 amen bro. thanks

@mowcowbell Месяц назад

Been driving and doing my own oil changes for 45 years, never prefilled any oil filter. Never experienced any engine failures either.

@flintwithers8460 25 дней назад

Me either. Tbh, if it was a necessary step you would think that either the oil can or the filter would say so on the packaging. I mean, it says to lubricate the seal but doesn't mention filling the filter with oil?

@speedster2464 25 дней назад

How long did you keep the vehicle for? It’s all about wear!

@daleyoung87 24 дня назад

When you add new engine oil to the engine it fills the filter almost immediately

@HungryH1951 20 дней назад

The oil will find the filter. The new engine oil is clean and it will coat the inside of the engine, circulate and find the dry filter and soak and fill it. Not prefilling the filter is no big deal. After running the engine for an hour or so you might want to check your engine level to make sure you are not a bit low after the filter soaks up oil,

@leethomas556 18 дней назад

The filters I see, say not to pre-fill

@ITSFUNZ 6 месяцев назад

In the 1970s my Grandfather taught me to always fill the oil filter first, and lubricate the seal, always wipe the mating surface clean as well ! Been doing it that way ever since ! It just makes sense. Never had a lubrication problem with an engine ! My 97 Silverado is over 307 thousand miles still working great 👍

@willg.5168 6 месяцев назад

Vortec 5.7 is the Godzilla of V-8's💪🏽

@alanmerritt860 6 месяцев назад

What do you do when you have to turn your filter upside down?

@marcludwick512 6 месяцев назад

Anti drain back valve, most of it will stay in the filter without coming out.@@alanmerritt860

@tommurphy4307 6 месяцев назад

i've built 180-cubic-inch V6 motors that have made 275bhp- with a slightly massaged holley model 4412 2-barrel carb- and all motor. lets see mr. goodwrench do THAT.

@BobVan 6 месяцев назад

@@alanmerritt860spin it on really fast?? There’s definitely some dumb designs out there with oil filter placement.

@AMS-dx7wo 7 месяцев назад

in the early 80's Bosch sent a Service Bulletin advising techs to pre-fill filters. The reason given was that the wet filter media was stronger and less likely to have elements break away during initial cold start.

@themotoroilgeek 7 месяцев назад

Thanks for sharing!

@jamesmedina2062 7 месяцев назад

that was before designed obsolescence. Now they do all kinds of things to accelerate wear like giving bad break in advice and long oil change intervals. I knew an engineer for aircraft told me we have the tech to make engines last millions of miles but choose to not use it for that. Brakes too!

@reason2gether 7 месяцев назад

Yes, the filter media can experience a great shock from the incoming oil pressure wave while being unsupported on the filtered side by an equilibrium of pressure. Another great reason to pre-fill the media.

@monikhushalpuri 6 месяцев назад

Hmmm on my 3.7 mustang if I were to pre fill the oil filter and install it since its installed sideways then oil will come out while installing...I don't like dry installing the filter so what I started doing is filling the filter and then letting all the oil drain out of the filter...good to know about shock of oil pressure on dry filter media...I suppose my method of filling the oil filter and then draining and installing to saturate the filter media reduces this issue at the least on horizontally mounted oil filters

@AMS-dx7wo 6 месяцев назад

@@monikhushalpurion side mount filters, I fill them ~½ full. oil will wick/saturate media.

@bishopsfishops7440 Месяц назад

I work on a car ferry. Our big cat V8s need to be pre lubed with a pump before starting. It can take up to 10 seconds for the oil to get to the top end of the engine. And you can hear the valves tick until oil gets into the top end. So it absolutely makes sense to fill up a filter. Just like it makes sense to pre-lube our big diesel.

@fmsracing442 15 дней назад

A little tip, when I have an engine that I can't pre-fill the oil filter. I disconnect the ignition and crank the engine until I see oil pressure. Then I reconnect the ignition and start the engine.

@rooky55 6 месяцев назад

As a millwright I worked on many large industrial engines for 50 years and most of them had a pre lube pump on them so that should tell anyone how important lube is at start up. They also had post lube pumps on the turbos that were spinning at 30,000 RPM at shutdown.

@joesutherland225 6 месяцев назад

If you want caterpillar actually offers oil analysis for a relatively low cost .I believe amsoil also offers this analysis too

@rooky55 6 месяцев назад

Thanks Joe. Working with large diesel / natural gas prime movers for 33 years oil analysis was routine and required by the insurance underwriters. Take care.@@joesutherland225

@paulricketts1089 6 месяцев назад

...VW has auxillary waterpumps that circulate water through the turbo for 2 or 3 minutes AFTER shutdown. It keeps the oil from carmelizing inside the turbo. Thus prolonging the life of the turbo. It is why truckers don't shut off their engines immediately after driving. So when you see a semi-truck setting there idling for a time while parked , you'll understand why.......

@ProudDad1976 6 месяцев назад

I believe all engines should have an electric auxiliary pump for the oil however if you prefill or not a car without that will not have good pressure for the first five or so seconds prefill or no so I see no reason to refill unless you add that pump. Side note I have added that pump to my classic cars, it is not hard to do and you can tell the different every time you start the cars

@tedclark7860 6 месяцев назад

You can do that with a car too by making it so it won't run when you try to start it.

@spresc2180 5 месяцев назад

Speaking for just over 50 years of owning Toyota’s and doing oil/filter changes every 3000 miles and NEVER prefilling the filters, each car had over 220,000 to 225,000 miles on them before I traded or sold them, all with excellent compression and very little oil burning between changes, never had excessive chain/sprocket wear, worn valve guides/stems etc. I am 74 now and still doing it the same way. Proof is in the pudding. Lots of wives tales out there along with poorly made engines and engines with poor care and neglect from their owners.

@ricosilverback2608 5 месяцев назад

Kudos to Toyota

@joeyoungs8426 5 месяцев назад

Same here with two Caravans that were near 300k before selling. Currently an Equinox and Malibu with over 200k and counting.

@dix_pack_of_sixie 5 месяцев назад

Nothing is always...you both beat the odds. But then again, knowing the science & data support prefilling the filter, how much less wear would have occurred had the system been properly primed and pre-filled?

@joeyoungs8426 5 месяцев назад

@@dix_pack_of_sixie With respect to the Caravans it doesn’t really matter. I got my miles out of them. One of them went to 360k before a t-bone accident (no casualties) ended its run. Jury’s still out on the two Chevys.

@ihd-3603 4 месяца назад

Can’t say I’ve ever heard of an engine failing due to not pre-filling the filter. Most are from using oil not specified by manufacturer or not following recommended oil change intervals.

@MrC1066 Месяц назад

Well I cannot believe that I am commenting. It seems obvious that pre filling the filter is a good idea. I understand that a horizontal filter can drain in any case but the argument that new oil is not filtered before it enters the engine beggars belief. Keep up the good work and a good informative video and I hope no one comes back with any more negative comment.

@edwardwritt3820 Месяц назад

Good information for those who do their own oil change. I've been pre filling for years . Your video just proved I've been doing this right thing.

@themotoroilgeek Месяц назад

Right on!

@kbros65 7 месяцев назад

Like everyone says! Been priming filters since the 70s and I’ll keep doing it!! Thanks guys!!!

@lukew2194 7 месяцев назад

I have been drinking green tea all my life, I guess I will live forever.

@FishFind3000 7 месяцев назад

Another thing is that massive equipment like Caterpiller and Komatsu that are for quarry use have engines worth stupid amounts of money. Those machines have a prelube system to build oil pressure before every start to maximize engine life.

@miltonwells6750 7 месяцев назад

What if you spin the engine over without crank it?

@hotrodray6802 7 месяцев назад

Accumulator systems for this are pretty reasonable priced. Plumb into the gauge hole. Road race cars use similar to prevent starvation during cornering.

@gregoryclemen1870 7 месяцев назад

having worked in a hospital, now retired, the "CAT " diesel engines running generators would crank the engine with cylinder unloaders open until oil pressure was established, closing the cylinder unloaders/ shutting off starter motor(s), and letting the engine start/ run, first at at an idle then ramp up to operating R.P.M.( 1800), allowing the transfer switches to operate. we tested generators every two weeks. the engines also have coolant block heaters to keep the engines as close to operating temperature as possible. the oil cap. on these engines are 60 gallons

@jacobmartin1951 7 месяцев назад

@@miltonwells6750That all I do. Hold down fuel pedal crank it over for 15-20 seconds. Fills the filter.

@jamesmedina2062 7 месяцев назад

@@miltonwells6750Not good enough. The engine starter spins engine a few revolutions also before it starts chugging. Don't be lazy!! Just prefill filter

@georgestringam689 28 дней назад

Years ago putting your filters on dry was pretty much a non-issue. No one gave it much thought. I knew guys from both sides and it didn't seem to have much effect on the engine's life. However, with the advent of multi-viscosity oils that old method went to hell in a hand basket. When Cummins brought out the Big Cam engines there was a sharp increase in camshaft/follower failures. Cummins soon found out that many failures occured shortly after an oil change. What few operators realized was that the multigrade oils got so thin that when the drain plug was pulled that 8+ gallons of oil, which now had the viscosity of black coffee, rushed out with such a fury that it siphoned out the lube system. Refilling with fresh oil plus installing the filters dry took many seconds to refill the oil galleries. There was an advisory to fill the filters before installation. A second advisory was to not change the oil hot but to let the engine cool down for an hour before pulling the plug. "For the extra three cups of old oil left in the galleries, the new filters should take care of that." Close quote. After following that advice engine failures amost stopped completely...

@markleggett3944 4 дня назад

They should come with pre-lube systems from the factory.

@daletimms7792 12 дней назад

My granddad was a engineer in the US COAST GUARD for 33 years and I remember when I was 12 years old helping him do my first oil change on his truck he told me then to pre oil your oil filter always.

@reason2gether 7 месяцев назад

Amen!!! I work for a Fleet and have done this for well over 35 years. I can see and hear the difference upon start-up after the oil and filter change. You can see how long it takes for the oil pressure light to go out while cranking and at initial start-up. You can also hear any low oil pressure related knocks that exist in that engine until the oil pressure light goes out, and you can hear the sudden disappearance of that noise when it does go out. The only reasons people have to justify not doing the pre-filling of the oil filter method are: The textbooks do not mention doing it. The owner's manuals do not mention it. Finally, some oil filters are mounted at an extreme angle or even upside down which prevent a total fill of the filter without spilling oil during installation. In the last case mentioned, it still helps to add oil slowly to the filter while tilting it and rotating it around to at least saturate the media. Then install it. The majority of the time it takes to reach oil pressure while cranking and at initial start-up is because the media is still absorbing oil before it can let oil pass through. I know, I know, some will say "who has time for that?" I do. Especially for my own vehicle. I still do it for the Fleet vehicles I work on because I care. I know it helps longevity and I want to do the best job I can to ensure that. If you don't, even on your own car, you are plain and simple just being lazy. Before you saw this video or read this comment you could claim ignorance, but not anymore.

@cr500mike 6 месяцев назад

Right -On !!!

@budlanctot3060 6 месяцев назад

There's some crazy Russian mechanics on RU-vid who do weird things with cars & engines. They once modified an oil filter by grafting a clear body onto a filter base plate. It took a surprisingly long time to fill the dry oil filter. They didn't time it, but I'd say it was almost 5sec from when first started.

@tomphillips2608 6 месяцев назад

Makes sense. My '11 Tacoma 4 .0 l v6 filter is a spin on upside down. From now on , I don't care if it gets sloppy, I will at least try to saturate the media with fresh oil. Thanks!

@jerrykorman7770 6 месяцев назад

I bought new a 2007 Toyota FJ Cruiser with the 4.0 V6. The spin on oil filter is near the top of the engine, upside down. Many many oil changes and never, ever heard a knock or tick after changing the oil. Oil light went out almost instantly

@The77stevo77 6 месяцев назад

@@jerrykorman7770bull 💩 roll the window down and listen. It ticks like crazy for about 1 or 2 seconds. Can't be good

@buzzs7274 6 месяцев назад

I have been pre-filling my oil filters for 50 years and now you proved the fact thank you.

@bustjanzupan1074 5 месяцев назад

And i am pre-filling oil filters or at least pre-cranking the horizontal filters for more than 30 years.

@1957f100 5 месяцев назад

60 years for me

@bustjanzupan1074 5 месяцев назад

@@1957f100 GoooOoood !!! ! !!! Thanks to God that some people on the planet still Know how an engine bearings are Working !!! ! !!!

@28tpi 5 месяцев назад

40 yrs for me so by my calculations that's 180 yrs collectively. ✅

@tommurphy4307 4 месяца назад

the only thing that was proven is the fact that pre-filling the oil filter makes pressure more quickly upon startup. if it makes you feel better- good for you.

@richardcornelius1050 Месяц назад

The answer is NO pre-filling the oil filter will NOT damage the engine . I’ve been doing it for Decades .

@bluegrassman3040 5 часов назад

The only filter I ever pre-filled was a fuel filter on a Cummins engine in a yard dog. Or maybe a hydraulic filter on a Landoll Bendi forklift.

@lukaszbebnowski7633 12 дней назад

You got my thumbs up on all videos I've watched and a subscribe too. There are many things I like about your videos, the filming, the editing, the amount of time taken to create each test, oil lab tests and more importantly using science, proper testings of oil done by independant lab to prove speculations right or wrong. Keep up the good work mate. As a side note, hatters gonna hate (can't change a mules way of doing things) and people who were previously in doubt or did not know about this, have proof and know how to do it right.

@Googurz 5 месяцев назад

My father taught me to pre-fill the filter when I was a kid and I've always done so. It always seemed common sense to me that you will build oil pressure faster by pre-filling. You can actually HEAR the difference in the initial engine startup with many engines. You generally hear a tiny bit of engine clatter before pressure builds, and starting an engine with an empty filter makes noise for at least a couple seconds longer.

@themotoroilgeek 5 месяцев назад

Thanks for sharing!

@thewatcher611 5 месяцев назад

Clear flood mode is easier, and better. When you remove the filter, you let more oil out than just what is in the filter. What are you going to do about that? Clear flood mode primes the entire system without the stress of combustion.

@Terminxman 5 месяцев назад

so just use flood mode...

@elephant1851 4 месяца назад

@@thewatcher611 Do both if you know you can't afford a new engine.

@paul41to45 4 месяца назад

dad taught me to prefill also, more than 50 years ago. common sense really proven here

@danielgriffith7694 6 месяцев назад

I’ve prefilled my filters for over 50+ years. And this proves what I’ve been doing 👍👍👍

@Johnsmith-zi9pu 6 месяцев назад

proves nothing.

@xbrizzcakez 6 месяцев назад

I`ve never prefilled a filter for 50 years without any problems. Current vehicles are 15 &20 years old.

@stewiegriffin5075 6 месяцев назад

Are you still driving that same car ???? My daily driver is 40 years old and I have never pre filled the filter in all that time so it proves nothing

@quintrapnell3605 6 месяцев назад

I doubt it matters but whatever google told the man was dumb

@MechaTronic161 6 месяцев назад

Prefilled or not, it doesn’t matter.

@ricarldonelson 27 дней назад

Even if only basic common was used....adding oil to the new filter just sounds right 👍

@michaeltotolo1251 5 дней назад

Thank you for making videos like this and actually educating people. You rock.

@MrHfroese 6 месяцев назад

For 30 yrs I have always prefilled my oil filters and I don't think I will ever stop doing it that way.

@churchyandfriends 6 месяцев назад

Is it really a bad thing to not pre fill the filter? I’ve never pre filled a filter.

@bustjanzupan1074 5 месяцев назад

Aaammmeeennn , Me Tooo !!! ! !!!

@IDontWantAHandle101 5 месяцев назад

@@bustjanzupan1074And me. It's not hard and it does save those golden seconds on first start. Anyone who argues different is just dumb.

@unikornkontroller 6 месяцев назад

I’m just recently going back to doing my own oil changes and I used to always prefill. The idea is you are allowing as little air into the pump as possible so it pressurizes as fast as possible. It’s weird this is even a debate. Even if it served no other purpose than piece of mind I’d still do it. It adds maybe 30 seconds of work to the job.

@unikornkontroller 6 месяцев назад

@@user-uv7up4vg6i But the entire system needs pressure regardless of if it’s downline or upstream from the pump. Air anywhere in the system causes pressure to drop, right?

@davelowets 6 месяцев назад

@@user-uv7up4vg6iIt's not so much "air in the pump", but the filter will obviously be full of nothing but air if you don't fill it first, and those few seconds it takes to pump the filter full of oil means that the engine is running with ZERO oil pressure, and the engine suffers a bit of wear from it. That little bit of damage DOES accumulate over time, and takes precious life off the engine.

@davelowets 6 месяцев назад

@user-uv7up4vg6i That oil left in the bearings is basically useless without pressure behind it. It's a proven fact that up to 90% of engine wear happens during start-up, when there isn't any pressure in the system. If oil sitting in the bearings was enough to protect the engine, we would use it, instead of a much more expensive special clingy, thick, assembly lube when we build an engine.

@guytowers8479 6 месяцев назад

What about vehicles with oil filters that go on sideways 🤷. So it's not going to be fully filled.

@JimV90 6 месяцев назад

@@guytowers8479 You still put oil in it. just enough before it wants to spill out. Anything is better than nothing.

@alfredolopez-bruce6199 Месяц назад

i have changed the engine oil several times and i never did prefill the filter with oil. and by not doing so, it never did any damage to the engine. now a friend has told me that its best to prefill the filter with oil before installing it in the engine. thanks for the demonstration.

@Keene88 Месяц назад

Awesome video! I've always prefilled my oil filters ever since I was taught to do that in my high school auto mech class back in 1980.

@johnmiller3394 6 месяцев назад

Even though, as a seasoned mechanic I already knew the outcome before I watched the video. It was still a very good and informative study. Although, the fact that ANYONE would think prefilling oil filters is bad amazes me!!😅

@themotoroilgeek 6 месяцев назад

Thanks for sharing!

@jeffro221 6 месяцев назад

@@GeorgeSanford-pb1yj Very true. I used to not believe pre-filling could damage my engine. I was cocky, so I did an experiment. I did an oil change and deliberately picked a tiny spec of dirt off the ground, about the size of a flake of black pepper, and put it in the filter while I pre-filled it. Then when done, I started the engine, and sure enough, after 10 seconds, the engine exploded. I studied all the parts and every bearing in the engine was completley wiped out. Now when I change oil, I do it as if I was working on the space shuttle.....clean room, complete body suit with respirator face mask. And no more pre-filling!

@user-et1id3hd5i 5 месяцев назад

No oil at all will do it faster.@@GeorgeSanford-pb1yj

@Georgiagreen317 5 месяцев назад

BS! @@jeffro221

@bustjanzupan1074 5 месяцев назад

It amazes me tooo !!! ! !!! But, this is obviously Just Because they Are sooo Lazy, or Careless , or Greeddy !!! ! !!!

@BOB24502 2 месяца назад

Thanks! I never pre-filled my filters in the past (not because of thinking it was a bad thing, just lack of knowledge), but will from now on!

@BingBongYourLife Месяц назад

Same!

@petemcpeterson6205 17 дней назад

As an automotive machinist ( 40 years)I can say with complete confidence you don't have to pre fill the filter. A ton of modern engines have filters that are either horizontal or vertical ( upside down) that have zero issues not being pre filled.

@BOB24502 16 дней назад

@@petemcpeterson6205 Why not flipping the car upside down, or put it on its side for models with filters not facing down?

@jcnikoley 25 дней назад

Good information. I'll be priming my filters from now on. I didn't think it made a difference as long as you re-checked, and added oil after the first start after an oil change.

@carnelsullivan6009 Месяц назад

Great video guys, this information has been helpful and has finally given me a straight forward way to look at this from now on. Thanks

@unclebucksoutdoors3767 6 месяцев назад

Great video. As a retired aircraft mechanic it is wild to think anyone would recommend not pre filling. Unless someone is cleaning the filter housing area thoroughly prior to removing the filter, more contamination would come from there than a new bottle of oil.

@TIMEtoRIDE900 6 месяцев назад

I pre filled a filter and crawled under my truck, careful not to spill the oil, then bumped the fuel line and got sand all over the filter !! Back to the auto parts store for a new one !!

@fluoridaman2332 6 месяцев назад

@@TIMEtoRIDE900 Good filters come with a plastic seal cover and you can reinstall it after prefill then remove it when you are in position to install it onto the engine. It's best to rinse clean the area of dirt and debris prior to service to prevent any contamination.

@malcomreynolds4103 6 месяцев назад

You should be fired if you are doing something in the maintenance routines that the manufacturer does not tell you to do. That is how you get people killed. If it tells you to fill it, fill it. If it doesn't tell you to fill it, don't.

@johnmuir8305 6 месяцев назад

This is why I don't fly in GA shitboxes

@TIMEtoRIDE900 6 месяцев назад

@@malcomreynolds4103 Sure - now explain how people are actually "killed" by pre-filling an oil filter where the manual says "don't bother" - - - ??

@nephetula 6 месяцев назад

So many engines have filters mounted at angles, or even horizontally, that pre-filling becomes problematic, and probably a moot point. Many other factors contribute far more to engine wear than not pre-filling the oil filter.

@DekGT5mad 6 месяцев назад

Yeah, longcranking because people don't pause at the on position for a few seconds for the ECM to do it's checks when starting the engine is probably the most common! My 323 takes 2 cranks when I pause at "on" to start, but if I go straight through it takes 7 or 8 to start!

@steveeab2364 6 месяцев назад

The filter on my F150 is horizontal and pre-filled really isn't an option

@fluoridaman2332 6 месяцев назад

@@steveeab2364 Fill it up and let it soak for at least ten minutes then drain it back out into the container. This helps prevent media damage from the initial oil rush on startup.

@SmallBaller 6 месяцев назад

A major part of that starting sequence is fuel pump priming. I wait the few seconds until the pump stops @@DekGT5mad

@swaggerdo7231 6 месяцев назад

Nah, yeah fam; I also have issues with scratching my arse and picking my nose at the same time. Life if just hard, amirite?

@thomasgarrison3949 Месяц назад

Thanks for the info, I will start pre-filling my oil filters & doing my oil changes myself, because most oil change places DO NOT pre-fill the oil filters.

@Harold-si7eh 3 дня назад

As a former truck driver I have been in Mobile Oil factory. And know the oil is clean when put in the containers made of plastic,Not guaranteed what may be in the metal drums! The filter had been full when you tookit off!Who knew! The Bigger problem is I have hauled into the Oil filter factory's the Coiled metal used to make filters and you should always inspect any filter before installing by looking inside you may be surprised What falls out!!!

@shanehathaway2791 6 месяцев назад

When I was a young man in my 20’s My grandfather always said preload your oil filter my Dad told me this too… And they both always gave me great advice… thanks for confirming that for me… Now I’ve no doubt I’ve been doing it right for years…..

@disgracebook5708 6 месяцев назад

I’ve been pre filling oil filters during changes for 43 years. Thx for the confirmation.

@themotoroilgeek 6 месяцев назад

Glad to help

@quailhunter9343 Месяц назад

Amazing how some people think or lack of. Thank you for the video

@liukang81 День назад

I always pre-fill it! I’m with your ideas sir! You’re the best!

@dirtyburd71 6 месяцев назад

Another tip for funnel storage, keep it upside-down with the openings covered. Small opening up leaves less chance of junk entering the funnel.

@DAK59 6 месяцев назад

I store mine in a gallon Ziploc bag. I also label the bag with the type of fluid the funnel is used for.

@Comm0ut 6 месяцев назад

I wipe mine off and toss them in the dishwasher with the next load of dishes. Dishwasher detergent makes short work of oil.

@ihd-3603 4 месяца назад

Just hang mine on the wall until next time. 😂

@MartyrMachine 2 месяца назад

Been changing my own oil for 20 years. Always filled the filter before install. Never was told to do so, never heard to to do it, I just did it. Glad I have.

@themotoroilgeek 2 месяца назад

Glad to help

@jimgagne3801 2 месяца назад

I'm 56 and been doing it for 39 years ...Do you know why you and I have been doing this for so long and were never told to do it? Cause we are not dumb. So to all you young dumb people out there that think your reinventing the mouse trap, If it comes off the motor with oil in it, don't you think you should put the new filter back on the same way you took it off? And for all you that think the new oil is dirty till it goes through a new filter,....You are just a special kind of stupid, aren't you. My God ! young people are Dumb ! As the saying goes, "Youth is wasted on the young"

@frankorobinson1540 2 месяца назад

And how much actually stays in the filter before you get it tightened 😮lol if its mount upside-down 😂😂😂❤

@christians131 2 месяца назад

⁠@@frankorobinson1540Bro you obviously just flip the car over in that case 🙄

@frankorobinson1540 2 месяца назад

@@christians131 actually you can just crank the engine over with ignition coil fuse out crank until red oil light goes out and good to go .but flipping the car over works too lol

@gilberthale7777 Месяц назад

Excellent post. And surprisingly in a subject that ought not cause any controversy. But, it does. I placed a link to this video on one of my Facebook rants on the subject.

@djr320 4 дня назад

Never even knew it was a thing. I’ve learned something new today. Thank you guys 🙏🙏

@Shanes_Shed 7 месяцев назад

I can't believe people would think pre filling a filter is a bad thing. I know what the ISO cleanliness numbers mean so I'm glad you touched at the end the difference in particles with the code number increase - im sure many out would be thinking the increase is only a couple of numbers, but each increase is actually doubling the number of particles

@themotoroilgeek 7 месяцев назад

Absolutely! Thanks for mentioning that!

@kychristell1779 6 месяцев назад

Definitely silly

@georgedavall9449 6 месяцев назад

It boggles the mind, doesn’t it?! I don't know what some People are thinking these days?

@kevinmurphy3464 6 месяцев назад

Great video. When I was a kid my friend’s dad was a petrochemical engineer and told us to always pre-fill filters when doing an oil/filter change. My auto shop teacher in high school said the same thing and I’ve been pre-filling filters every-time for the last 46 years with no problems.

@themotoroilgeek 6 месяцев назад

Thanks for sharing

@TheGrumpyFarmer 5 месяцев назад

@@themotoroilgeekI’m a 57 year old farmer who’s changed filters on a lot of tractors and combines over the years and I’ve never filled oil filters 🤷‍♂️

@waveriderz2687 5 месяцев назад

Have a side mount filter. How do you do that without spilling oil every where?

@kskip4242 5 месяцев назад

@@waveriderz2687if you pour the oil in the oil filter and let it sit upward for a while before installing it it will soak into the filter media just don't overfill it.

@hillbillyhenry5098 5 месяцев назад

I all ways filled mine up half way to get it on , because a lot of them are side ways but still have about half the oil in it.

@tomb9878 3 дня назад

Not necessary but couldn't possibly hurt...some filters are installed horizontally. New oil is clean.

@SavetheBytes 12 дней назад

I'm just a youtube trained DIY-er, and while I always lubed up the gasket and put a little bit of oil in the filter, I will start filling the entire filter from now on. Never debated it, but just never thought to fill it more like as the old filter comes out. Makes sense after watching the video and reading all these comments now, but never thought about it before. Thanks!

@nicholaspetre1 6 месяцев назад

Guys, finally we have scientific and empirical approach to the oil topic, not just opinions of sofa specialist who express their opinions and those are true because they do so. Please make new videos more often. Your content is super terrific and useful.

@GrandePunto8V 6 месяцев назад

This type of knowledge is nothing new in the industry, oil analysis etc., was there for last 40-50 years. But somehow this is "new" to many people, especially in the automotive field. No one has an obligation to educate internet trolls.

@InexplicableBill 6 месяцев назад

@@GrandePunto8V Well ain't you a ray of fkn sunshine. Dude - EVERYONE has an obligation to educate internet trolls. Your way of thinking is the polar opposite of what it should be.

@MarkoVukovic0 6 месяцев назад

"sofa specialist" 🤣Love that! There are so many. I call them "armchair experts".

@cliffords.8341 6 месяцев назад

@@InexplicableBill I believe his/her way of thinking is no education is good education. 🤪

@cliffords.8341 6 месяцев назад

@@GrandePunto8V Nobody is saying oil analysis is new, but in this video it shows that new oil out of the bottle is cleaner than when it came out of and engine without filling the oil filter with oil prior to installation and after the system has been primed. It's showing the trolls that there is engine damage (crank main bearings and connecting rod bearings) due to not pre filling the oil filter. If this information is not put out there for the general public to know, then how are people to learn right from wrong. Everytime I sell and oil filter I inform my customer they should fill it with oil prior to installation and I explain why. They usually say if they do it will leak out when they install it because most of them are sideways on motorcycles. I tell them while the engine is warming up fill the filter with clean oil and let it sit and when it comes time to install it, it would have absorbed most of the oil and you're only going to lose maybe a table spoon.

@jeffgriffith7003 7 месяцев назад

I always pre-fill my filters, even the ones are mounted sideways, I just get them as full as I can without spilling any oil because some oil is better than none. I’ve always been told people don’t like to pre-fill filters because they’re worried about stuff falling into the filter like a sloppy mechanic would do. But I always make sure I’m in a clean environment without dust floating around and I’m always very mindful of anything that could get inside the filter before I install it so it’s really a non-issue unless you’re a sloppy mechanic.

@themotoroilgeek 7 месяцев назад

Thanks!

@thisisyourcaptainspeaking2259 7 месяцев назад

Yes, I think maybe they install the dry filter before removing the plastic wrap just to avoid any chance of contamination.

@lkeil84 7 месяцев назад

I hate the my Subaru had an upside down filter. Made it easy to change, but could not be prefilled.

@davidh.8513 6 месяцев назад

I fill the filter "as full as I can" on my side mounted John Deere Yanmar diesel engine also!

@georgedavall9449 6 месяцев назад

Very good comment jeff! I pre fill my filter inside, away from my workshop, and cover the filter as I take it out to the vehicle, and immediately install it. COMMON Sense after all.

@drew2717 Месяц назад

Learned this 30+ years ago. Kudos for dropping the knowledge and research to prove.

@themotoroilgeek Месяц назад

Thanks!

@Mikheno 26 дней назад

Been pre-filing oil filters for over 60 years now. Haven't destroyed an engine yet. I did spot one thing I do a little different than you guys. I don't just rub some oil on the sealing gasket. That only lubes the outside of the gasket. I remove the whole thing and lube both sides. Now you don't worry about a dry spot where the ring contacts the can which could allow it to leak. Small potatoes I know but it's just what I do.

@gregscott9170 7 месяцев назад

It’s not just about oil starvation on initial startup. Pre filling the filter saturates the media and on startup the DP across the filter is lower in a full filter than in a dry filter. It also minimizes air in the oil.

@ratgreen 7 месяцев назад

Exactly, even with side mounted filters, I will fill the oil filter as much as I can to wet the filter media as much as possible, and pour out the excess if theres too much, for that exact reason.

@themotoroilgeek 7 месяцев назад

Right on!

@oneninerniner3427 7 месяцев назад

@@ratgreen sure you can, maybe not plumb full, but just because it's on a bit of an angle you can still get quite a bit in them. Some of the older Ford's it was real easy, they were pretty much vertical. One of my older pickups has an oil cooler with a horizontal remote mount for the filter. I can get it 2/3rds -3/4 ish full then hold it vertical and quickly tip it horizontal and spin er on. You don't lose much oil.

@kfelix2934 6 месяцев назад

when I had spark engines , I used to pull the disturbor cap to keep the engine from starting up and spin the engine 3-4 times to fill the filter and then replace the cable and then start the engine. I know that was being paranoid but that would prevent any oil starvation issue, but to be fair that was being overly parnoid. Newier cars and diesels you can do what I'm suggesting.

@martinlang9615 6 месяцев назад

@@ratgreenOn a side mount filter I do that too, except I totally fill the filter first until all air is purged, then hold horizontal until the level stabilises, then screw it on (with the a thin film of oil on the rubber of course).

@highrzr 7 месяцев назад

This makes perfect sense considering the majority of engine wear happens at startup.

@themotoroilgeek 7 месяцев назад

Absolutely!

@02hreblue30 7 месяцев назад

makes zero sense. only oil at start up is on cylinder walls, bearings and pistons from previous use. Engine hasn't run yet.

@TheBigRed. 7 месяцев назад

Lol.🤣🤣🤣🤣🤣

@Resistculturaldecline 7 месяцев назад

More because of a cold engine clearances.

@bobbybishop5662 6 месяцев назад

I want to see you prefill a filter that mounts horizontally or one mounted on the top mounted upside down. I'll wait.

@yawhan6828 25 дней назад

Great video, great duo. I am going to start doing this

@quanj3349 27 дней назад

Thank you so much for doing this and showing the proof! My father taught me this so many years ago while working on w123 Mercedes-Benz engines on an '83 240D, '82 300CD and '85 300DT and taught me the same applies to standard or American engines and I've always thought common sense made sense as to why to do so when changing the oil. Great video! Greatly appreciated!

@redvision350 6 месяцев назад

I am a newer tech and I have not been pre-filling oil filters, wasn't even something that came up in school or around the shop. After seeing this video I am going to start doing this! Thank you for posting this.

@GrandePunto8V 6 месяцев назад

Now imagine, that there are literally hundreds of such little things you don't know about the trade.

@rogerdonoho4924 6 месяцев назад

Makes perfect sense. Although I have not practiced it. Now, with my 2016 colorado, I couldn't if I tried. Cartridge filter on top of engine. My car's filter is cannister. But extremely tight space and on the slant. Have to turn filter a couple of angles to get where it's going . Days of V8 with cannister are pretty much over.

@rocknraptor3195 6 месяцев назад

🤦wow

@madewithscraps 6 месяцев назад

Hopefully this shows you how much your schooling lacks for proper education of practicing the trade correctly. As a ASE Master Engine Builder, plus other titles, 33 year owner of automotive machine shop, look at books used in classes to see horrible statements and massive lacking of information required for the tech to be successful.

@Ozzy3333333 6 месяцев назад

I think my 29yo 1994 Toyota truck with 442K miles doesn't care, I have never prefilled my filter, 7 minutes per oil change with filter, and 5 minutes without filter (I change the filter every other time). Half a year to 30, no major work done, still running well.

@binyamj 6 месяцев назад

Great video! I have been pre-filling since I started doing my own oil changes 7-8 years ago. I’ve never heard that it was a bad idea. Common sense would dictate that it is a good idea. You proved it.

@__WJK__ 6 месяцев назад

Exactly... total "common sense" for sure!

@brian_328 6 месяцев назад

Brand new oil in a brand new oil filter somehow not being filtered has to be one of the dumbest things I’ve ever heard. Exhaust bearing, blinker fluid, winter and summer air for your tires okay I can see where you made a mistake 😂 but this makes me think that some people wake up and stop using their brains.

@TheCompbuzz 6 месяцев назад

Not all filters can be prefilled though. Some are mounted sideways instead of up and down.

@PNH-sf4jz 6 месяцев назад

@@TheCompbuzz You do the best you can and clean-up any accidental or incidental spillage. Better than not pre-filling at all.

@olliefoxx7165 6 месяцев назад

@TheCompbuzz You don't fill those filters all the way. You put in enough oil that won't spill then screw it in. Some oil is better than no oil.

@iamxsapper345 24 дня назад

My 2020 Ram 2500 6.7 Cummins currently has 304190 miles on her… not once have I pre filled the oil filter. 7944 hrs (2891 idel hrs 5053 drive hrs) still purrs like a kitten! I’ve always been taught to pre fill the oil filter but on these trucks you have to turn the filter sideways to it get where it goes! Great video

@garyschuetz2779 Месяц назад

Very entertaining couple of guys here! I learned of the importance of pre-lubing for airplane engines that sit for extended periods. My last truck was a 2003 Sport-Trac with the notorious cam-chain failing 4.0L V6. I experienced the startup rattle at about 35K miles (nearly just broken in) and found out that when it sat for more than a couple days, the cam-chain tensioners, which were pressurized with oil, would go flat......it didn't rattle if started every day. I rigged up a starter relay switch on the dash so that I could crank the engine about 5 seconds and never had a startup rattle. I later learned that I could use a non-chipped key and just crank for about 5 seconds. A couple years ago, I traded the Sport-Trac with well over a 100K. My Tundra, with the 5.7 V8, has a cartridge filter which cant be prefilled. I have a non-chipped key that I use to pre-lube if the truck sits for a couple of days. For my Tundra oil changes, I stretch the cranking to about 10 seconds before swapping to the chipped key and starting the engine. Some might think it's too much trouble and to them, to each their own. I think I benefited from this little detail with the Sport-Trac and I think it's wise. I salute you Motor Oil Geeks and keep up your good info sharing. 🙂

@1slow5point0 6 месяцев назад

I’ve always filled mine up with almost as much oil as they can hold on vertical or slightly angled filters. On horizontal mount ones, I add enough oil to be able to rotate it and soak the filter material without any running out.

@CatRacer1a2a 6 месяцев назад

Agreed. This is what I do. If I can't fully fill a filter because of the angle, I figure wetting the filter media is the best I can do.

@robertisaar 6 месяцев назад

Realistically, that's probably half full of the oil has time to saturate and pass through to the unfiltered side. Far better than nothing.

@budlanctot3060 6 месяцев назад

I've ALWAYS pre-filled my oil filters. Been doing it that way for the last 55yrs, and I've always changed my oil myself. I didn't need anybody to tell me that, it was just obvious. For the last 25yrs I've been using FilterMags on my oil filters, too. If everybody could see how much ferrous dust those magnets can pick up out of the oil and hold it until you replace the filter, they'd be using neodymium magnets on their (metal bodied)filters, too. Maybe you could do a scientific test of that, and cut open a filter and show viewers that, also.

@tommurphy4307 6 месяцев назад

probably a good idea for crappy blocks. when you inspect for metal- inspect for stray casting sand in the filter media while youre at it and you'll see that GM blocks are the WORST

@frankmartin4018 6 месяцев назад

You still got lublication on bearing when you start it up since you just had it running before you change the oil . I saw a boy one time changing oil, had the oil out, decided to move the car off the rack and put it back on the rack for some reason, never hurt the vehicle one bit, a fact, Than he put the oil in it, filter was already on it, owner seen him do that. LOL No, did not hurt the car, owner of the dealership knew it did not hurt the car, it was a Chevey Impala . By the way, I never did fill up oil filters on any car , not even my NIssan Altma and it has 151,000 miles on it now , and I done thousands of oil changes on state police cars as a head mechanic, , it still has lublicant on the bearing, and it will fill the oil fifter right up fast , never had a problem with it , NEVER , after changing oil in hundreds of police vehicles for over a decade . Don't rev it up until it picks the oil up you understand. LOL Only problem I ever had with those Dodge cars where cam shafts on those 318 motors would go out or those police would get the car hung up and rev it up wide open back and forth until they blow a hole in the piston . Now those real old police cars that had the 440 motors in them, it could have a dead cylinder on that piston and he can ran it like that also , LOL it would still do 140 mph with one dead cylinder and run smooth as pie, yes that is a fact . LMAO

@jonathanperkins1807 2 дня назад

Appreciate your science driven content. Everyone has an opinion but data speaks for itself. Question... I watched your tip for vertically/horiz. mount filters. But what do you suggest for older vehicles that don't have that "flood mode" capability? thanks! and already subscribed.

@carolchia1001 13 дней назад

I started changing my own oil a little over a year ago and when I was researching before beginning my undertaking, there were a lot of mixed reviews for prefilling vs not and since I didn’t know and it didn’t seem to cause major immediate damage either way, I picked the most logical way: prefilling. It takes literally 2 extra seconds and could add miles to your engine, so why wouldn’t you? Thanks for adding the science to back this up though. Sometimes what one thinks is the logical choice isn’t really the best one so it’s nice to see actual data support👍

@stevenbongiorno9277 6 месяцев назад

I’ve been filling my filters since the 80s. I saw an article about it, and it made a lot of sense to me. I have a Chevy small block, so it works well. Even though now it’s running a remote filter mount, that is vertical, I still fill my filters. My street car has a vertical filter mount, and you can bet that I still fill it. I believe that otherwise, there’d be a huge air bubble that would cause some damage in starting the engine

@InexplicableBill 6 месяцев назад

When you say vertical... do you mean the filter screws down on the post or up? Most filters are vertical... or slightly diagonal, but screw upward from below. I'm trying to wrap my head around the idea of pre-filling an oil filter but then turning it over to mount it... 😱😱

@Enword_Jim 6 месяцев назад

The thing is, there's always an air bubble, the pickup tube drains when you empty the oil pan and there's also still some air space in a pre-filled filter. This test was flawed because they did not test how long it takes to get pressure after draining the engine and installing a pre-filled filter, it takes more time than an already primed engine. I still think you should pre-fill the filter, but you don't get instant oil pressure like they tried to demonstrate in this video.

@dhgmllcshea5038 Месяц назад

@@Enword_JimRight on... underrated comment!

@FishFind3000 7 месяцев назад

Also if motor oil was dirty from the bottle how would small engines like lawn mowers and generators survive since they are splash lubricated with NO oil filter!

@themotoroilgeek 7 месяцев назад

Great point!

@RogerMiller-td5yc 7 месяцев назад

Or type 1 Volkswagen engines

@turbodog99 Месяц назад

They fail at 500 hours, far short of the 10,000 fir a modern engine

@TheSonarSailor Месяц назад

Not to mention, how do you fill your engine with pre-filtered oil? You don't, that's how. Bottle straight into the engine oil fill.

@whatsit2ya247 Месяц назад

@turbodog99 At 500 hours hmm? I wonder how my 25 year old walk behind John Deere is still chugging along, starts first or second pull even after sitting all winter 🤔

@redchevy3307 12 дней назад

Thanks guys for getting the truth out and using data to prove your point.

@bettyg7710 27 дней назад

I am a master certified Automotive Technician with 35 years of experience and I can tell you “when possible”, it is always a good idea to pre-fill your oil filter. For most automotive applications in the first few rotations the filter has been filled because it is so small, before the engine starts but the air pocket with still make its way through the system. I guess best way to rule of thumb it. The bigger your filter the more you want to put some oil in it if you can. There are some application that you simply can not fill the filter, oh well. Blame the engineers. Bottom line, I agree fill your filter when possible and change your oil every 5000 or 6 months which ever comes first.

@themotoroilgeek 27 дней назад

Thanks for sharing

@DanielSmith-yp7mw 7 месяцев назад

You'd be surprised of how many dealer mechanics and lube places skip that part. Filling the filter. I know first hand mechanics who told me they don't bother with it because of the extra time it takes. It's not them worrying about contaminated oil. Part of why I will always change my own oil.

@robertswift6101 7 месяцев назад

those are speed oil changes,,the faster the more money they make,,they could care less about your car

@themotoroilgeek 7 месяцев назад

Thanks for sharing!

@lukew2194 7 месяцев назад

You think anybody working on your car is deeply concerned about it. It's just a job to them regardless of where you go@@robertswift6101

@lukew2194 7 месяцев назад

You think that a mechanic is not pushing cars in and out as fast as he can to make the most money for himself.@@robertswift6101

@reason2gether 7 месяцев назад

exactly! @@robertswift6101

@ratgreen 7 месяцев назад

I've always prefilled. I feel like anyone who understands how an oil pump, and oil pressure / lines / fluid mechanics works would instinctively know that pre filling will always make sense. I've only ever heard 'its a waste of time' from people who dont understand how things work, or lack the ability to think ahead, or are hacks who dont care about anything.

@themotoroilgeek 7 месяцев назад

Right on!

@lukew2194 7 месяцев назад

I guess people who design engines for a living don't have a clue about engine lubrication and the people who make oil filters are idiots also. However, some goof ball in silly glasses has all the right answers.

@brucenichols540 6 месяцев назад

@@lukew2194 Actually YOU are correct. Those folks are 'compartmentalized' and know very little outside of their specialty.

@kirkstiefel2102 6 месяцев назад

Really? What about large filters? Running the engine for seconds longer with low/no oil pressure can't be good. Filling the filter can't hurt and surely must benefit the engine. People who design engines agree with pre-lubing. Racers do it all the time. Pre-lube kits can be installed on engines. You throw a switch before starting the engine and the oil is pressurized BEFORE starting. Dry starts are NEVER good! @@lukew2194

@georgedavall9449 6 месяцев назад

Indeed!

@blythkd9017 28 дней назад

I started in a shop when I was 15 and didn't prefill filters my first few years. Now I always fill when possible and have for years. Even on a Duramax where the filter sat horizontal, I would prefill and lose very little 15W-40 getting the filter started. Good to see some actual data.

@jackiebeene9609 14 дней назад

I'm 73. Have always prefilled my oil filters. When I got a Gladiator a few years back, it really bothered me when I changed my oil that I couldn't prefill the canister filter. I knew about the pre-flood mode. But the canister filter on this thing is inverted and empties each time you shut the motor off. I found a product called the Baxter Performance spin on filter adapter. You can replace the canister filter with a spin on cartridge filter. Yes, it is still inverted but remains pressurized so no more dry starts.

@davidh.8513 6 месяцев назад

Great video guys! I ALWAYS prefill my filters with oil. And you just proved why you should!

@bennylloyd-willner9667 6 месяцев назад

I have two Subarus, and I never prefill the filter on those. I would need to turn the car upside down to do it...😊

@DavidMott-ws4rh 6 месяцев назад

I have been prefilling filters since I was at least 16 or 17 on all of mine and my family's cars that I maintain. From age 16 to 21 I worked at a full service Texaco station. Every oil change I did there I prefilled the filters. I am so glad you did this video if for no other reason it backs up what I all ready knew.

@quonsetthehutt3105 6 месяцев назад

Too bad for those engines with sideways canister filters that can’t be pre filled

@user-wv1pj6wh4h 6 месяцев назад

good for you- your customeerr will offer you a gift for pre cum flters

@TexTheMaster 6 месяцев назад

@@quonsetthehutt3105you can still prefill those kind of filters by priming the car

@scottmoto 6 месяцев назад

Yet in 45 years of wrenching I have never heard of or know anyone that did this. Not cutting it down, but it is not that common as you think.

@juddlebot2146 6 месяцев назад

Is not necessary to prefilled them anyways people been doing them for years they have no problems

@redbillywiley Месяц назад

Thank you for posting actual data to back it up.

@themotoroilgeek Месяц назад

Happy to help!

@dalekelley3003 28 дней назад

Friend of mine in the NHRA always told me to prefilled oil filter, and since he still holds a couple of records I'll listen to them, and have been pre-filled filter on my BMWS and Volvos for 20 years.

@frankpriolo7735 6 месяцев назад

As a retired ASE Master Heavy Truck Technician, I can vouch for everything you put forth in this video. I started out in 1969 as a mechanic apprentice in a small speed shop. When we built and engine, we assembled it using Lubriplate. Put it on a run-in stand and flushed out the lubricating system before installing it in a car. As I got older, I switched over to heavy trucks where I spent 49 years. During that time, if it were at all possible, we would fill the oil filter.

@paulhunter9613 6 месяцев назад

Lubriplate used to be some of the best oil you could buy, very high zinc levels. I used it for decades . When taking off valve covers to replace the gaskets that were starting to leak, I noticed that the valvetrain and even the inside of the covers were absolutely clean, no sludge of any kind. And that was after 100,000 mi on the engine. Now the epa has forced lubriplate to reduce the amount of zinc so I have quit using it.

@davevan8864 7 месяцев назад

My Auto Tech teacher at Independence High in Charlotte was the first person that told us to pre fill a oil filter. He was a club racer and ran a big block Vette, which he said must have a full filter on start up. So I am glad you confirmed the info I got 45 years ago!!

@themotoroilgeek 7 месяцев назад

Is Charlotte area folks got to gleam info from the masters at Holman & Moody back in the day!

@davevan8864 7 месяцев назад

@@themotoroilgeek We went to the old shop many a time!!! thx

@backlineguy Месяц назад

Great video...glad I pre-fill the filter now...

@rickb.5492 2 месяца назад

I don't know about your engines but on my Harley-Davidson big twin engine the filter is on the RETURN side of the oil flow NOT on the feed side so pre-filling is a moot point. Especially since the oil filter is mounted horizontally.

@gkinghsmith9352 6 месяцев назад

Lake almost mentioned it, but there's a reason filters have an inner seal. Maybe Lake can do a video on what it's for and why it's important. And i loved how quickly the pressure came up with a full filter! it was quicker than I was expecting.

@aaronvienot 6 месяцев назад

Equally to point: a prefilled filter that is newly installed, or an engine that's been sitting a while, won't have as much retained oil in the system as one that's been fully pressurized, shut off, and then run again a short time later. That last case is the only one they appear to have simulated. I would still expect the re-pressurization time to be shorter, but by how much? And what about with different oil pump styles, filter styles, and locations? There are a lot of variables to that question.

@boostedmaniac 6 месяцев назад

Always pre-fill the oil filter if you can. It reduces the amount of time during that initial start the engine has low oil pressure from filling the oil filter itself.

@Scummy_shovel 6 месяцев назад

Lol. Uhh no. The oil pump is way before the filter. It’s gonna build pressure regardless of rather the oil filter is full or not. Pre fill. Don’t pre fill. Doesn’t matter

@garyalford9394 6 месяцев назад

Some filters set up straight and wont let you pre-fill.

@Scummy_shovel 6 месяцев назад

@@garyalford9394 and some like the pentastar are upside down AND cartridge so they 100% just bleed back down to the pan a few minutes after you shut the engine off.

@mback12000 6 месяцев назад

@Russel_russelson No. There is no pressure until the system is filled. There is flow, but not pressure. Watch the video again. You can't have pressure pumping fluid into an empty cavity. There is no oil to the bearings while the filter is filling from empty.

@Scummy_shovel 6 месяцев назад

@@mback12000 I don’t need to. I have built engines for over 20 years. There is no pressure at the gauge sending unit because there isn’t any flow there. But the oil pump on ever engine is directly connected to the oil reservoir and builds pressure the second you start the motor. You can’t have “flow” if you don’t have any pressure to push the flow. Oil sending units are located on the top end usually You noticed he dint show testing with a empty full filter? You know why? Because the time Result is the exact same. I have built and tested this multiple times.

@OKHotrodder-cg5gu 17 дней назад

I have a mechanical youtube channel(another name). I get bad comments for different things over the years. I remember, what I call keyboard warriors, telling me I didn't do proper maintenance because I prefilled the oil filter. It's amazing how many people are so ignorant and are quick at telling someone they are wrong. It's also very wrong for people to effect your channel by leaving thumbs down when they are ignorant. I think that's one reason youtube did away with the thumbs down. I've seen many channels thay have did very well that give wrong information. I've had a hard time understanding why a channel like mine has never taken off with very good information even after many years of me starting it. I base the opinion on comments I get of "best channel" or "best video on youtube." But also get bad comments like "you shouldn't have prefilled the oil filter." Keep up the good work!

@themotoroilgeek 17 дней назад

Thank you so much for the comment and encouragement. I know exactly what you are saying, so I really appreciate the feedback from someone that has had to deal with the good and the bad of the comments section.

@yogidemis8513 Месяц назад

I worked at a few different oil change shops about 17 years altogether, one shop I was there for 11 years and we serviced all types of cars and my boss always wanted me to pre fill the oil filters on high performance and horse power cars and of course diesels then after oil do a quick double start the engine so oil would fill up before adding oil pressure into the system. Some people agree with that way and other's say it doesn't matter. I do that way just because I'm used to it and it just seems to be more professional and it shows the customer that you take that extra step.

@markleggett3944 4 дня назад

I would guess that 90% of the oil change places don't do that. Cheap bulk oil and a $2.00 filter. You would be lucky to get a new filter.

@ronaldjoyce7374 6 месяцев назад

I was a mechanic for 38 years and can’t tell you how many oil changes I’ve done, not only on gasoline engines but diesel engines as well and have always prefilled oil filters. Not only pre filling engine oil filters but also pre filling fuel filters and hydraulic oil filters as well. Old school education and I’ve also taught this to my students when I taught a preventative auto maintenance class. It’s only common sense. BTW you now have a new subscriber and I thank you for setting this straight. Ron

@BradArringtonBoating 6 месяцев назад

The modern diesel world has a bit of a different view on pre-filling fuel filters, at least in marine applications. Per the spec and maintenance instructions on my Cummins QSC 8.3 and my QSB 6.7, they definitely spec to pre-fill the oil filters. But Cummins specifically warns NOT to pre-fill the fuel filters. The reasoning ,per my local Cummins agent and others, is that modern common rail diesels have such small injector ports that you don't want any contamination. Filling a fuel filter effectively bypasses all the upstream filtering of usually 2 filters. In my case its a 20 micron Racor and the 2 micro on-engine filter. Unlike oil that's from a sealed container fuel is generally of unknown quality. Fuel can also have biological growth that would clog an injector. It's simple to prime the filter on a Cummins common rail: their own instructions call for just cycling the key to the "run" position a few times and letting the lift pump run to fill the filter. I know older engines require bleeding of air, but the Cummins common rails don't need it after just a filter change.

@malcomreynolds4103 6 месяцев назад

Even in my 1994 they told you to not prefill the fuel filter, same thing in a friend's 1992. What the manual says, is what you do. You don't deviate from it. Just because hacks that think prefilling an oil filter is helpful go away with prefilling other things, doesn't mean that it was ever correct. In the case of my 1994, there was a bleed valve you used to allow the fuel pump to prime the system on its own. On my friend's 1992, there was a hand operated primer you used to prime the system. following the manual, is not difficult. Making up useless crap to do is far more effort

@thomasaberlic375 6 месяцев назад

I have started an engine after changing the engine oil and filter (empty). With the engine idling, there was a noticeable crankshaft bearing knock until the filter was full and oil pressure was established. The crankshaft bearings were all in good condition and not worn. When the filter was prefilled with clean engine oil, and the exercise repeated, oil pressure was reached within a couple of seconds. It makes sense to pre-fill the oil filter if you can. It makes no sense at all to start the engine with the oil filter empty if you don't have to.

@user-oq6bd1gw5s 6 месяцев назад

If it's knocking it's shit anyway, oil filter full of oil doesn't fix worn out parts, only your imagination is satisfied.

@lylethomsen7901 5 месяцев назад

If you keep changing the oil without pre oiling the filter, you will, sooner than later, experience Rod knock, or at least lifter wear. Always prelube the filter when changing oil in your engine!

@arcanekingo5716 5 месяцев назад

@@user-oq6bd1gw5s Ive worked at a lube shop. The newer cars knock the loudest.

@arthursmith643 5 месяцев назад

Many vehicles some very expensive have cartridges filters and they are not pre filled.

@bustjanzupan1074 5 месяцев назад

And if the filter is horizontally mounted , you just disconnect the nozzles/jets , or ignition sensor , or at old diesels disconnect the gas-switch on the High Pressure fuel pump, and than crank it Untill the oil-pressure light turns off , And only After that , you Can start the engine Peacefully !!! ! !!!

@philippogue8158 2 месяца назад

No. It helps oil get to the rocker arms and top of engine quicker, when you don't sometimes you here tapping rods hitting on lifters, so it is better to put some oil in the filter!

@themotoroilgeek 2 месяца назад

Absolutely!

@handle_herr4488 2 месяца назад

Yes!!! Finally we have a respectable video with knowledgeable staff that stays going above and beyond. I gotta say jus by running these true analysis and using methods that potentially can and are sort of like bird feeding, it really holds Value, and also its enabling the rest of us to understand truly whats the truth, how, and why it works!! May God bless ya, and thank you so Much for the knowledge!! Looking forward to absorb as much as knowledge and wisdom as possible!!! Keep up the quality video!! Sending much love and peace from California your way 😊

@themotoroilgeek 2 месяца назад

Thank you!

@arthouston7361 5 месяцев назад

I'm so glad that I don't Google things like, "should I pre fill an oil filter," because after 60 plus years of working on engines, I know that I should pre fill the oil filter. I know that the oil going into that filter is not "dirty," and I also know that most people are idiots.

@themotoroilgeek 5 месяцев назад

LOL

@thebronzetoo Месяц назад

💯

@martinlang9615 6 месяцев назад

I REALLY like this topic: The home mechanic doing an oil change can also test this for themselves: Time how long it takes for the oil pressure to come on from when you crank the engine, when: 1/ new oil filter is pre-filled, 2/ new oil filter installed without oil. I know for a fact that it takes longer for the oil pressure switch light to go out. So of course I always pre-fill. I can’t believe people would think new oil would have particulates that could harm the engine without going through the oil filter first! It needs to get dirty FIRST! That’s serious overthinking right there, LOL 😂.

@krimke881 12 часов назад

This is cool. I've actually seen a test that showed it takes up to 60 seconds until all the oil that usually are circulating in the engine, are picked up from the sump. So, leaving any engine part completely dry for several seconds, are really wearing the engine down.