No Oil Changes and 1 Million Miles!!! Are Oil Changes Optional with a Bypass Filter? (INTERESTING) 

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As an equipment rental company we added by-pass filtration to multiple pieces of equipment in an effort to extend the hours between oil changes. Some equipment piles up hours much faster than others. Without going into extensive detail, we found a by-pass system worth the cost and the extra testing also found some issues we might not have known about, possibly saving us on major engine repairs. I agree with extended change intervals, not with never changing oil. Fuel contamination and loss of lubricity was also our concern.

I remember watching your videos when i was 15 and taking notes…now im 18 and working with my dad as a heavy machinery mechanic..LOVE YOUR VIDEOS!!

I spent 27 or so years as a hydraulic mechanic, and 13 of those years I worked with Kubota powered forklifts. One company, that used the cranes and forklifts that I specialized in, decided to get the oil tested instead of changed. In the Kubota engines they had us put Royal Purple oil in, then send out samples at change intervals. All was good for a while, then when a sample came back bad and a change was recommended it was changed. You never get every drop of the bad oil out, and the next sample came back bad as well. And so on, and so on. With hydraulics changing the oil in the tank is only 50 percent of the story, there was always "bad" oil in the hoses and cylinders. Just change the darn oil at the recommended intervals.

I have a 2005 freightliner with the mercedes engine. The original owner had the gulf coast bypass filter. I bought the truck with 1,100, 000 miles. He never did anything to the engine. It has 1,270,000 now and it's running strong. It does not burn oil. He did oil changes. I think the extra filtration helps a lot to make the engine last.

I run a FS 2500 bypass filter on a 2000 5.9 with 640,000 trouble free miles on it. I went 100,000 miles once on Delvac 1 synthetic. That drained oil tested fine but I could not wrap my head around going longer. I now change filters every 15,000 miles and change the oil every 30,000 miles. The bypass systems work. They work by trapping the small particles that cause engine wear. I now run Rotella T-6 5W-40 oil and use one quart every 10,000 miles. I swear by bypass systems to extend engine life.

Railroads tend to not change the oil in large locomotive engines. They change the filters, clean the strainers and sample it on a regular basis (they change it if the sample comes back bad, but that usually also means they have to fix something on the engine). And of course add more when it gets low. This strategy has worked fine on EMD, GE and ALCO engines for decades, but hasn't worked as well on the occasions when CAT or Cummins engines have been tried in locomotives.

I was a diesel mechanic in the Navy, and on the ships, there are centrifugal oil water separators that force water out of the oil. The only time oil is actually discarded is when it gets too much acidity or fuel dilution. Acidity can be dealt with, but fuel dilution is extremely dangerous. If fuel dilution gets too high, you end up with a crankcase explosion. The sumps of the engines have pressure relief covers to help prevent a catastrophic explosion. However, if the crankcase does explode, it obviously isn't something that is minor in nature. So if on a truck diesel you end up with fuel dilution, it would probably be a good idea to change your oil as a sump without vents would be a ticking time bomb. One of the schools that I went through was all about fuel and oil quality control and filtration. In that school, we were taught that oil doesn't "go bad" it simply becomes contaminated, so your statement about oil not going bad is correct according to the U.S. government.

When I was an engineer in the Navy, we never replaced lube oil, our oil purifier took out moisture and sediments.. just added make up oil for small leakage. Used purifier’s on main engines and auxiliaries.

Josh my recommendation since I run bypass filters is do not change your oil schedule. The main thing that a bypass filter does is remove carbon. It really helps with the new emissions engines. That's why I sent the email showing all the carbon. Thanks for doing the video. Also one key thing is plumb your filter after the oil had gone thru the engine and turbo. Just my knowledge of using them for years.

We have a customer with a bypass filter system on his ISX. Religiously takes oil samples and almost never changes his oil. Has had no problems with 700k so far.

Many years ago, I worked for a company that installed, long interval oil and grease systems. We put these large hi capacity filters on, then had a reservoir that held fresh oil, unit had a timer and at intervals, would inject a specific amount of old old, into the fuel tanks, and replace said oil with new oil. Also had a automatic, greasing system, which would deliver grease to, kingpins, fifth wheel, bearings in clutch, etc. It was designed to let team drivers take a new truck, and basically run it until it needed tires or something broke.

I remember when I was a teenager now 62 there were some log trucks still running liber- finer by pass system and I remember they would go several thousand miles after a oil change and the oil looked like you just changed it but as oil got better people quit using them I also remember mount saint Helen eruption and every log truck through away there paper air cleaner and went back to oil bath working in the volcanic ash the engines lasted longer on the oil bath. Everyone dismiss’s old tech but some of it is still relevant. Thanks for the video I always enjoy them.

When I sold my truck it had 1,128,000 miles on it. Used a bypass oil filter, Filtration System, changed the filter every 10,000 miles. Changed the oil every year. Never been inside the engine except overheads 1X a year when I changed the oil. If I was still working it, I would continue. Good system sure caused a lot of questions & comments. Thank You Sir

I worked for a major diesel engine manufacturer for 30 years, from 1970-2001. Early in my career I got to travel to a major trucking firm who was experimenting with " no oil change for 100k miles" and they were basing that on using a centrifugal type by-pass filter. The engines were inline 6, 855 cu.in displacement, turbocharged, so you probably know what engine manufacturer I represented. Long story short, it was amazing that the engines I inspected were still running just before they were disassembled! First thung is, the fleet did not service their by-pass filters, every one of them was completely solid with filtered oil contaminates that the filters had removed from the oil before they became inoperable because of lack of servicing, so these engines ran a long time with no by-pass filtration. Almost all piston rings were broken, the oil ring expanders were solidly locked to the oil ring if they were not broken, many upper rod bearings were broken in half across the oil hole and were worn into the steel back, main bearings were completely worn to the steel backing, injector push tube were stuck in the cam followers as they had worn themselves into the hardened sockets and injector links were totally worn out, some with 1/8" protrusions into the oil hole, upper rocker bushings were gone, the engines were basically scrap! Had the by-pass oil filters been serviced as required it would have been a different story, but how different I don't know, oils then met the applicable API specs of the day, but not as good as todays.

Im an engineer on a tow boat. My company used to run puradyns and never change the oil unless catastrophic engine failure, or a bad sample. The goal for us on a boat engine, anything from a 3406 or a detroit 60 series up to 12 cylinder 645 emd’s it to get 40-50,000 hours on them before rebuild or replace. Ive seen a few of the older ones go 45-50,000 hours running puradynes. But my company just ditched the puradyns as the prices for those are about the same as changing the oil and filters. We havent been changing oil long enough for me to definitely tell you it’s better, but i was one advocating for it. We have a few engineers in the River division that have said nope to the company’s desire to run the puradyns and not change the oil and just changed it anyway. Those guys have had less engine failures across the board than the puradyns. There is a place for the puradyns, they are wonderful for equipment that you literally cant shut it down to drain the oil. Just close the valves to the puradyns, change them, add 1-4 gallons per filter you changed, open the valve back up. But i stand by that if you can shut it down and service it traditionally you will get longer engine life.

I used to wrench on cats a few decades ago. Our oil rep broke it down to the point of saying that the oil never "goes bad". What happens is that the additives breakdown and wear out. But the oil is essentially the same, as long as you dont run into problems like coolant and/or fuel dilution. That was when we were experimenting with full synthetic royal purple. But definitely the key is oil samples! You have got to know what is going on inside and how your engine is acting. Great video josh, this is one of those topics that concern me now that ive been driving for 2 and a half decades and wrenched on them almost the same time frame, i worked for a company where you would service your own truck a lot of the time. Every little bit of information on most everything you cover goes a long way in know little and not so little things to look for.

Thank you for making such fine videos! On my 94 Pete 379 with a 3406 mechanical C I change my oil and OEM filter every 300 hrs. Ive got a bypass filter that I change every other oil change. I view a bypass filter as something to extend engine life NOT oil life. Purchasing engine oil will not hurt your bottom line but early major repairs and down time to do the repairs do.

I'm 100% for bypass filtering, but also keeping your oil change intervals the same, maybe extended a bit. Double safe. Incredibly well protected engine.

I use Amsol and their bypass filter that filters down to 2 microns. I use oil analysis and when I've tried to run extended drain intervals( over 20k)my Soot numbers get too high. This engine has 1.8 million miles and 800k on the bearings so I'm doing a bearing roll in. I'll email you some pictures. I can say that Amsoil increases my fuel mileage 0.3 mpg over Shell synthetic. I only run synthetic motor oils because it helps with the sub zero starts and high oil temps when pulling mountains.

A small Frantz toilet paper filter will work just fine to filter out wear particles. The giant Gulf filters are a pain to deal with and their proprietary filters will eat your wallet long term. Put a gauge on the input and when you see a rise in pressure replace the roll. Send in a oil analysis every 5k miles and as long as the results are good keep rollin.

I agree with you that running bypass filtration is a good thing. Hell, I even run a bypass filter on my coolant. I also change the oil regularly (see my point below)....but I do extend a bit. Sampling is key, as you rightly point out. However, for HEUI systems (one of mine is), the use of an HPOP usually means a high degree of molecular shearing going on which will drop the viscosity of your oil considerably. I would love to hear your thoughts on this and how that maps to greatly extended oil change intervals.

Another issue to consider is the additive package breaking down over time. Detergents, Viscosity stabilizers, zinc and other high pressure lubricity additives... these are all known to break down. It might be possible to lab test the oil and add the components back in, but I'd say its best to extend the interval but still do regular changes.

It's cool to hear a smart mechanic confirm things that I've thought of on my own, being a lil diy mechanic

I've been a diesel mechanic for 25 years. I manage a fleet of 37 freightliner cascadias and 2 years ago we decided to add an additional bypass filters on all of our trucks. At first I thought this is a bad idea, but I do a oil analysis every 25000 miles so I can keep an eye on it. After doing some research I found out oil does not break down. What really happens to oil is it gets contaminated. Now that I've done this for 2 years with my fleet and have data from the oil samples I can tell you this works. My maintenance program in regards to lubrication consists of changing the bypass filter every 25000 miles and take an oil sample. On top of that I change the oil filter at the block annually. I wouldn't suggest doing this unless you intend to monitor the oil through analysis and do repairs based on your results.

I agree as a mechanic in the military we never changed the oil unless the analysis came by recommending change the oil.

I wouldn’t try it myself. But as long as it never overheats or gets contaminated by coolant. I can definitely see the benefit. Really interesting. Thanks for bringing attention to this

Worked it out within the first 5 minutes of the video, the text you screen grabbed says they have a service interval for changing their oil filters and they replace lost oil with that, overlooking the fact they admit to 1 oil change outright, i guarantee that theyre replacing/topping up oil during their service intervals for the filter that basically they are doing mini-oil changes instead of one big traditional oil change. Its simple physics

The centrifuge separators I've seen on old Soviet machinery is awesome. It removes particles of any size. Just replace the rotor cup periodically, or clean it if you can chip the crap out of it that compacts in and becomes like concrete.

The Heui system is known to shear the molecules and a filter doesn't stop that. Just changed the oil and lab it to know when I run a bypass and lab it. It filters 10% of the full flow and is microned small enough to pull suspended soot 🤠

The filters are saturated with oil and when replaced additional oil is required. The regular oil filter is also full of oil that has to be replaced. You actually replace about a gallon of oil with each filter change. That may be helping the system to work.

Natural Gas compression. We run engine oil 15k hours plus. Sample every 30 days, filter changes every 4300 hrs. This is on 3600 series engines. I know natural gas fuel is very clean to begin with, but the additives are oil additives are still there even after that much run time. And the more they run, the lower oxidation, moisture contamination and TAN stay. Great video!

I have installed around 25 of those filters on otr trucks. Each time you service the filter you end up adding 2 or so gallons of fresh oil. This adds detergent packs back into the oil. filter elements are actually paper towels with a sock type material over it. If I remember right, bounty fits best. Also, a 60 series actually requires a full oil change at some point. I think they recommend 300k. Been a while. You also send a sample for tests each service. Main filter gets changed every 30k I think. I don't remember there ever being an issue on those rigs. Pretty good system.

Hi from the uk Many years ago when I was a truck mechanic I worked on some cummins engined trucks with by pass filters. No tests were done but back in the 80s it was reckoned that you could double your milage between oil changes. They make claims about moisture? That shouldn't happen as the truck shuld be up and running for long enough to stay at operating temperature long enough to evaporate any moisture. Yes you are right oils do break down around 250F or 140C and the additive package that makes the oil what it is deteriorates from the first time you start the engine. Yes by pass filters are good news but oil analysis will let you know when it's time to change but you have to be selective about who dose the analysis as the cheep ones only look at soot loading and the next level look at metallic content when it is the actual oil that needs to be checked for its viscosity change and additive depletion Keep up the good work

Being an independent owner operator with one truck and a limited budget I would be extremely scared to put this on my truck because I can't just wipe out 15k if my B model cat goes kaboom.

My Detroit 12.7 developed a head gasket oil leak at the back of the head. It uses a little more than a gallon per week. 3 years ago I installed an amsoil bypass filter and haven’t dropped the oil since, only changed full flow filters every 15k and the bypass filter as recommended at 120k, So every week it gets a fresh gallon and every 15k it gets it gets a little over two fresh gallons of new oil plus another 2 about every year when the bypass is changed. I have not done sampling and have had my fingers crossed about fuel contamination but I’ve made it to 850k and am not opposed to rebuilding or replacing at this point anyway. I installed the bypass at 532k.

In the USN large stationary diesels almost always had a centrifuge plumbed in as a bypass filter as well as full flow filters lube oil was only changed after fuel dilution reached 5%. I always thought fleet truck or equipment operations would benefit from plugging in a centrifuge when the engine was out of service and warm .

I've been running bypass filters since the 1960s. They extend the engine life or periods between overhauls. My experience is mostly marine Detroit Diesel 2 cycles. I owned commercial fishing vessels, tugs and a long line of pleasure boats. Engines I ran with bypass filters compared to the same model run by others just about doubled the life between overhauls. I did all the overhauls. Rarely did I ever have to recondition a crank or cam. The bearings were replaced with standard bearings. I was originally was trained on aircraft piston engines, so every surface was mic'd and recorded. I also ran 2 micron fuel filters because of all the parts in a mechanical Detroit injector. I did oil tests yearly. I'm retired, live on a large yacht with twin Detroits. I use a standalone centrifuge now. The oil never gets black, always semi-transparent. The engines were built in 1947, rebuilt once by me 11 years ago. Having clean fuel means I haven't changed an injector since the rebuild.

I use by pass filters all the time but I still change my oil on a normal schedule…I run them for the times I may pass my scheduled change and/or just for a extra safety….You talked about fuel dilution, fun fact the P51 mustang (along with other planes of the time) use to dilute engine oil with gasoline via a switch inside the plane to thin the oil for cold starts…I study plane mechanics and maintenance because I believe they one up the standard mechanic in maintenance and standards in some ways…

I worked on a couple of companies that trialled this . Some worked well .. some not so much .. but I've always been hugely impressed with the scania spinner filters .. would get to its service interval and the old oil still wouldn't even be be black . Didn't even seem worth changing it . Amazing for a standard set up .

I definitely trust a product from a website that looks like it's from 1995 👍 😂 The only thing missing is some fancy clipart text. There's a lot more that happens to oil then just particle contamination - fuel dilution, mechanical shear, oxidation from heat - a filter can't deal with any of that. Oil changes will always be the cheapest and best insurance for an engine.

Had this system on my last truck. 2001 Freightliner 12.7l Detroit. 1.5 million miles before liner and piston in #1 went poof. Only changed oil when oil sample showed it needed it. Best memory was 5 or 6 over its lifetime.

I'm a firm believer in centrifuge oil filtration, if it's good enough for ships, and large diesel power systems (my experience), also for truck engines, stock on PACCAR MX13, optional for Cummins X15.

2006 C15 Acert, I used to change my oil every 10 to 15k miles. Now I run an OPS Eco-Pur oil bypass system with Amsoil Signature Series 15w40 and I sample and change the full flow and bypass filters every 25k miles. Unlike the others the OPS has a heating element to evaporate liquid contaminates. Due to this my fuel dilution has gone from 1% before installing the system to less than .5%. (trace) after. As far as the additive package breaking down, the make up oil that gets added has been more than enough to keep the additive package at the correct levels according to my oil samples. I hope this info helps.

The truck I learned to drive on was a cabover KW with a small cam cummins. It had a luberfiner bypass filter on it that we changed at every oil change. I'm not sure if it was factory installed, aftermarket or an option. We never had any problems with that engine due to lubrication. In fact we ran it for over 800,000 miles with a camshaft lobe that had been dressed by hand through the side of the block (on the shoulder of I-10 in Mississippi) after a cam roller pin broke and flatten the peak. My Dad used a dressing stone made for bench grinder wheels to reform the lobe going far below the hardness layer. I would say that's a pretty good indication that the oil was doing it's job and that the filter was removing any particulates coming off the camshaft. I own 5 trucks now none of which have a bypass system and I have seen damage from lack of lubrication a few times. I would say it couldn't hurt to install one of these but keep the regular oil change interval or even double it. At least on ISX engines that carbon foul the oil very very quickly.

Thank you for your video and review! James Sims Manufacturer of Gulf Coast Filters since 1980. Retired 2012 and without a doubt stand behind bypass filtration.

I’ve never ran em on any of my trucks. I kinda wish I had, but I didn’t keep trucks long enough to see how well they’d work. I will say this (keep in mind this is WOM, not my personal experience), if you have a traditional spin on oil filter- between it and the bypass filter, you’re putting in close to a gallon of fresh oil every time you change those filters (replacing lost oil from the filter changes), so in a sense, you’re doing a full oil change every so often anyways. Obviously it’s a lot cheaper than replacing it all at once, but I’m making the point for those that worry about stretching the old oil too long.

I used to work for Roadway express. They had the Web system that dripped 1quart of oil into the fuel tank every 350 miles. Theory was by adding fresh makeup oil it replenished the additive package. They never changed the oil just filters at 25,000 miles. Plenty of engines with a million miles

When I ran a fleet of over 40 trucks, mainly 3406E, 14.6 C15s, and Acerts, I could get 20k out of every engine except Acerts. They would soot out the filter about 18,000 miles and plug filters. Once I was able to delete actuators, we could run higher intervals. I ran several types of oils as an experiment and never found any advantages of synthetics in the crankcase. Delo was the winner cost,versus intervals. I've overhauled multiple engines in the last 25 years that have had those bypass, never change the oil for reasons other than oil related problems and can say there was never really any significant change on internal parts between conventional intervals/oils. However, engines that had Lucas additive always had a gummy, nasty film inside. And the bearings always looked worse. Just thought I would chime in.

I run an Amzoil bypass on my Isuzu pup powered Ford ranger. Can't say it extends out my oil changes that much because the engine had unknown miles when I did the swap and seems to cruddy the oil up retty quick....But the logic is sound and cant hurt keeping this old diesel running longer. Love your channel:)

Have the Amsoil system on my 96 Dakota Almost 500k on it now. But it burns enough oil that it's pretty much getting a constant progressive oil change at all times.. LOL

I remember that million mile truck. I was talking about it about 1996. Paul Abelson Senior Field editor for Road King Magazine asked me for the truck owners phone number. They did an article on it October November 1996. The one oil change was someone forgot to tell a mechanic not to dispose of the oil it was a test truck. Its a little misleading to say the oil isnt being changed the Bounty Big roll paper towels are changed every 10.000 miles and adds 3.gallons of new Rotella. At 50.000 miles he also changes the full flow filters and adds 5.5 gallons. That is 17.5 gallons of new oil every 50.000 miles or the equivalent of an oil change every 40.000 miles. I believe Shell was involved in the measuring the parts. I stopped draining oil in my cars in 1963 using Delo 100 W 30 and a Frantz oil cleaner All I use now is the Gulf Coast the Motor Guard and a Jackmaster Classic. I did convert a flat head Ford V8 bypass filter to use Scott 1000 TP and put it on a Ford diesel tractor. I made a modification to the Jackmaster Classic. I drilled out the outlet orifice and added a 1/16 inch orifice at the inlet to get it to heat up. Its the same as the Peterbilt except I add 1 quart at filter change instead of 3 gallons. I believe it was a Shell engineer that said its not unusual. For these Detroit engines to go a million miles but not be in near new condition. The advantage of the Gulf Coast system is the oil is never allowed to get dirty. Road King also did an article on Amsoil and a 3 gallon Como filter. With that system the oil eventually has to be drained usually 50 or 60.000 miles. The Detroit didnt have a million miles on it when Road King did the article.It was less than 750.000 miles. I lost track of it at over a million miles when I quit selling oil filters. Always wondered what happened to it. Gulf Coast filters has their filter elements in a bag now. Some people still use Bounty. One guy says he gets his big roll paper towels from Costco. That truck is old news. There are several others now using the same system.

Awesome objective evaluation Josh. Very interesting cons and pros on both sides. I would guess a by pass system and bigger intervals at oil changes are the best. Cheers Josh. Always look forward to your Sunday videos man. Sorry no destruction yet. LMAO.

I owned one of these and went to 500000 with no oil change. I changed the brand bypass to an OPS1 bypass. GCF states that when you change the bypass filter you have to add up to 2 gallons of make up oil. I really liked their device but it was large and very messy to change. One reason I went to the OPS system. Theirs you only have to spin a filter off and on. One thing none of the bypass filter companies tell you is that they DO NOT filter out diesel fuel from the oil. So if you have a bad injector you are still going to have to change your oil every 10 to 15k until you get the problem fixed. And for sure you better be doing oil analysis if you are going to use one of these.

Very interesting idea... I have been thinking about adding one of these oil bypass systems on my C15, so good to hear that you are onboard with the idea...seems to make sense, to me. Thanks for the great content and have a Happy Thanksgiving!

I worked for roadway express and they used a system made by WEB. It dripped a quart of oil into the fuel tank every 350 miles. Theory was makeup oil replenished all the additives. Never changed the oil. Changed filters at 25,000 miles. Had many of the 2,000 linehaul trucks exceed a million miles. Saved big on oil disposal costs.

The company I work for has just introduced a bypass filter on the QSX15 we use. We're currently in a testing phase to see how far we can take them.

When working for Weyerhaeuser we installed a couple of centrifugal type bypass filters to see if we could extend oil change intervals. I was amazed at the amount of carbon that they collected from the oil! Probably about 2-3 lbs of solid carbon in 3,000 miles! The did look cleaner as far as being black. Oil samples showed less impurities in the oil also. But Weyerhaeuser didn’t start using them for some reason.

but oils break down, theyre polymer chains n they slowly get broke down n dont do their job anymore... i mean their just simply isnt any way around that...

I've seen an engine run for ages where it was a completely self contained unit. Absolutely no oxygen coming from outside. It's exhaust was plumbed back into the intake and the oil was in the exact same condition it was what it was 1st put into the engine. No contamination to the oil. Impressive.

I would love to see a comparison from a independant lab between the internals of three exact types of engines. One with a bypass oilfilter, one with a coolent prewarming bypass waterpump (which is also heating up the engine to a certain degree before starting) and one is stock, after let's say 100000 miles under the exact external conditions (with the bypassoilfilter engine would be the only one without an oilchange, the others accordingly to the manual) , but that would be extremely expensive and therefore not be happening.

We have been running GCF for over 20 years it works well FYI the replacement filter are two rolls of bounty paper towels Are new equipment are getting Eco pure filter From Pittsburgh power We oil sample every 25 k

Large ships such as container or freight ships operate using a fill-once lifetime oil, and then clean and process it thoroughly over the life of the ship.

@ProjectFarm should put this to the test

It would be interesting to know the load & load cycle on the million mile engine . A friend has a c-18 cat in a boat that is set at 1200rpm & 450 hp & it has 60, 000 hrs on it . Pretty remarkable!!

Excellent, you nailed it. Additional filtration can only be good; the million mile thing however should be regarded solely as a proof of concept or product impact, not an ongoing realistic plan. Try it with a safer oil interval change and test the oil, to determin "where the curves cross". I love the idea.

Bypass systems work extremely well, but it’s not an excuse to neglect your engine. Using frequent oil analysis is absolutely key to monitor these things like wear metals and coolant and fuel contaminations. One thing you did not mention was the use of oil bypass systems in conjunction with a high quality synthetic motor oil. The really high quality synthetics, such as Amsoil are far more resistant to those heat ranges. You can run oils like Amsoil at 250° all day long and never hurt it, while inferior oils will definitely suffer from thermal breakdown from even short periods of time over 270°. A place that we really see a benefit with the extra filtration actually makes HEUI Systems operate smoother. Because the fuel injectors operate from high-pressure oil, the cleaner the oil is the smoother the injector operates, you’ll actually see better fuel economy with a quality synthetic oil that is super filtered in these applications. We also have fleets of trucks that have noticed by using a bypass system with our high-quality Amsoil diesel oil, have seen a significant decrease in DEF consumption. Also consider that would be your top offs counteracting fuel dilution. He will also be adding more oil to the system when changing out the filters. And with the bypass filter system on a heavy duty truck you’re usually adding at least an additional gallon to the total capacity. I could go on for days.

I used to work for a fleet in the 90's that used a DOC system which consisted of a solenoid actuating a plunder that injected 2 oz oi engine oil in to the fuel return line/ It was worked out to need around a gallon of oil on every tank of fuel, sometimes a little more than a gallon. Every time the driver would fill up he had to add oil. When we did pm's, we didn't drain the oil just changed the filters. Removing a valve cover was a gunk filled experience

Does the bypass filter remove fuel contamination? Diesel fuel is a much better lubricant than gasoline. I don't think a gasoline engine could get away with this.

This is very fascinating I think I'll keep changing my oil but I'm definitely getting a bypass filter

I wonder what is the difference in cost between the oil analysis and actually changing the oil?

I can see a system that will work. 35 years ago I worked for Ruan Leasing and they had a push on to build a million mile truck, the called a MEGA truck. Remember this was still in mechanical days, and 500,000 mile rebuilds were still a thing. Web had a system that would eject an ounce of oil into the fuel tank on a timer, and a level sensor that would add oil when the level got low automatically. The oil was never changed just the filters. We sampled everything and never had an issue. But the oil was BLACK. I know this isn't the same thing but kinda in the same vein. With all the clean burn technology in the engines today, it seems that better filtration and maybe adding some additives back in along the way would work. But of course the oil companies make money selling oil, so I doubt they will ever support such a program.

This is quite interesting ! We had a Powerscreen screening plant with a Deutz 4 cyl turbo , it had a toilet paper looking filter called Kleenoil bypass filtration system. It seemed to work good. Currently my 2012 International dump truck has the infamous maxxforce 13, I run rotella T6 and change it every 500 hours. With so much egr and soot , I’m wondering if I wouldn’t be long blowing it up even with a bypass. Also being a dump truck I’m in dusty conditions frequently. My take is, maybe a non emission engine , that’s on the highway at operating temperature, little dust, the bypass idea would work better ?

There was a system that injected engine oil in the fuel and replaced that oil with fresh oil, a little at a time. The idea came from a study (long ago) in heavy mining equipment. They had fleets of haul trucks where they allowed (small leaks) leaks on a portion of them (engine oil, gear lube, and hydraulic oils), but they kept the other units leak free. They found that the haul trucks with leaks had a longer service life, which is essentially the same as more frequent service intervals... or just replacing a small amount lubricant at regular intervals between services.

I run a 2007 LBZ Duramax w/ FS-2500 oil bypass - Filter cartridge is 2mU. I also use a PPE Hi efficiency Filter @98% efficient collecting 10-20mU particulate. I do filter changes every 50-60,000 kilometres & Oil every 100,000 kms. I do similar with my fuel filtration (FASS) typically change those every 25 -30,000 kms. Filtration = Longer life.

They make the claim with a series 60 😂 those leak enough oil that by the time they hit 50k there isn't any original oil left in it

This has been tried for 40+ years, Caterpillar even sells engines with bypass filtration factory installed. That being said they still recommend scheduled OCI. The bypass filtration is to help extend OCI, NOT eliminate them. The frac industry is littered with failed 3512C engines due to customers having engines equipped with 250hr oil pans and pushing their OCI to 1500-2000 hr. I believe it's possible with a small engine such as the lower HP C15 on-highway, being driven every day to make the claim they've made, but I wouldn't advise it. Bypass filtration works, but it's not a substitute for OCI .

This is scary no oil changes

Correct! But very few want to hassle with installation.

I like how diesel destructions are so well engineered they become singular component failure in many different areas as opposed to many different areas of component failures like with gas engines

I worked at a factory that made bearing seals. The hydraulic oil in the machines was 50 years old. They had a filter cart with 2 filters that were 8" round and 3 feet long they would filter the oil until the cart wasn't in by-pass in the morning. Then go to the next machine.

I worked for a fleet that ran the spinner centrifuge system and every oil change there was probably 1/4 to 1/2” solid on the outside edge paper. We still changed the oil at regular intervals but I think they were worthwhile

You have a fantastic narrating voice. You're well spoken and it helps me understand more and more. I am an Automotive tech primarily foreign in the past but nowadays domestic. I am a CDL holder and I work on a lot of Freightliner VT365s/ DT466s and Caterpillars in school buses converted to transport workers. I find myself trying to learn more and more commercial brands as I just enjoy anything mechanical and I appreciate you taking the time.

I think the bypass system would be a good investment when used with regular oil changes. An un mentioned problem is the viscosity stabilisers used in modern oils tend to be the first to break down from a variety of causes, primarily through dilution mechanical separation and evaporation. With these additives gone the base oil remains but then lacks the viscosity performance needed in various operating conditions to protect engine parts. In this case a cold start or two every day versus a long haul constant temp engine will have very different long term outcomes. I also believe oil change interval should be more closely correlated to driving conditions, like extended stopping frequency, regional and seasonal temperature range and warm up cycles, rather than just miles covered.

Amsoil has bypass filter systems along with oils and lubes. I've used their oils and filtration systems, both on my own and my customers machines. They test their stuff and have it tested by independent labs.

Excellent video I work for a company the ram oil bypass a got isame results they did 180,000 miles and did oil sapling at 40,000 miles I drove truck with 1.2 million miles, I did notice some oil consumption hire and there. My opinion on this is a may make sense on a big fleet a will be a big savings on maintenance, but and a small operation I wouldn't go that far I'm a single man operation I purchased my truck with 480,000 miles I use full synthetic oil and run 20,000 to 30,000 miles to change the oil my truck now is at 720,000 miles and so far no issues with my engine

I use bypass oil filtration on my F350. The oil stays clear of soot, the only reason ive found to change my oil is when the oil loses its TBN and the anti-wear properties in the oil. Ive found one oil change per year suits me fine, prior to installing the bypass filter, my recommended oil change intervals were about once every 3 to 4 months.

Some of our railroad track construction equipment have “kidney loop filters” on the hydraulics. They seem to way cleaner when we do a pm service, and generally have less pump failures.

What I have heard from users of oil bypass systems is that while you don't do an actual full oil change, when you change the bypass filter (some have said they don't change the oem filter) you have to add a quart or two of oil. From their oil analysis it seems that the oil added makes up for the additives that have been used up between filter changes.

Totally believe this.Oil only breaks down if subject to extreme heat that would be present in an oil refinery. Still laugh at my Dad's 100,000 mile oil changes. The Ford 460 in the station wagon outlived the car until the wheels fell off it.

This has been claimed for many years and many have learned hard way it doesn't work. Even city tried it few years back took out few engines. Just so much fun changing engines out in garbage truck. Like owners with CNG or LNG engine oil looks clean like new oil. Still has to be changed because it does break down

I've used Lucas since, before it was popular, to keep a rod knocking motor running for a little while. It ran for seven years until I built another motor. Honestly, I have disassembled three small block Mopars that had Lucas in them. The bearing surfaces really are slimy and slick.

I don't know if the author changes the oil in his car, but he definitely changes his blood daily! The guy has excellent facial skin and teeth. If he shared information about his diet and his daily routine, I would be even more grateful than the story about bypasses. So, just in case, I subscribed to this blog. Thanks to him in advance.

Overhauled an ISX years ago that went 1.4 million running gulf coast filters and oil change every 150k, new gulf coast filters every 50k or so. Engine looked good and still ran great, main reason for overhaul was oil leaking out of the back of the head gasket and owner wanted a reason for a vacation. Ran it then til he died.

Had factory luberfiner bypass filters on old big cam 855 trucks. Noticed the oil not staining as much and maintaining pressure for a much longer interval vs my other 855 powered trucks. Adding another 2 gallons to the total capacity helps keep it cool too. That old system was not all that too precise but did prove to work well.

I didn't read all the comments, but the following wasn't mentioned in the video. Another point to consider is when the oil filter is changed, the oil within the filter and that runs out while changing the filter, will need to be replaced with new oil. This could compensate for contaminates keeping unfilterable contaminates to a minimum for quite a while.

I could see a huge benefit in the yachting industry. Being able to service and monitor engine conditions with sampling. Not having major mechanical repairs that could take a profitable charter vessel out of service for months.

I have watched 10 seconds and the answer is yes, for at least a decade and only changing the filters. I used to work for volvo trucks who made this claim years ago. Use high grade (relatively expensive) oil, and change high grade filters with a slight oil topup, and 1,000,000km is more than attainable. When asked why they don't, the answer was "because costumers refuse to trust it". Anyway, back to the video.

I had an experience with a specialized machine that had an Onan genset to power the machine up to 22 hours a day. With 15w40 conventional oil the oil got changed every 300 hours of operation. After I got the boss to buy 5w40 synthetic, the oil was changed every 600 hours. The real benefit was an 18% increase in fuel economy. While the synthetic seemed less gritty and slicker after double the hours. A fancy bypass oil filter is a smart idea. Since each of these systems filter the oil to be like new oil. And synthetic has less breakdown and cooking of the oil. I left that job after 6 years. But a friend that stayed with the company. Told me that after the engine had over 20K hours. Another identical machine that had around 10k hours. But used the standard 15w40 oil. Was worn out by that time. The 20k hour machine was checked by the Onan rep. He stated the engine was like new! Of course, radiators, water pumps and other accessories were replaced several times. But the base engine was in great shape! So the point is, use good synthetic oil, filter it the best you can. And change it at some regular interval. The engine will likely live long longer and cost less to operate than the design specs.

We ran a pretty similar system with the diesel generators (and the gas turbine main engines, kinda) on the guided missile frigate i served aboard in the navy. We had DeLaval centrifugal purifiers for the engine oil and just added more to make up for the inevitable leakage...which, coming from a 16v149 was considerable. Molecular shearing absolutely is a thing and you do need to keep an eye on it. As the oil gets basically chopped into smaller chunks the viscosity goes down and therefore needs to be replaced. Dealing with the contamination and the antioxidant additives being used up is easy with good filtration and additives, but the shearing can only be dealt with by replacing it.