ATF as an Engine Oil substitute? Let's see what happens! 

I remember my father accidently topped his oil off with ATF. He was all upset and asked a guy we knew, who was a guy like you. He had a farm and fixed things all the time, and he said not to worry. He was right, nothing ever happened. So I was curious about this video, I really appreciate your work.

Man, I'm on a PF binge today. I'm just so frickin exhausted of questioning whether or not I'm being lied to. Your integrity is a sanctuary.

When I bought my 2009 dodge ram 5.7 (15000 miles) it had a sticky lifter so I use 1 quart of transmission fluid in the oil about once a year before oil change and run it 100 miles. Sticky lifter gone havent had a issue since. Truck runs great have had it about 8 years there's about 170000 miles on it.

certified technician. True believer of ATF on sticky Piston rings. had a 1993 Honda Civic 320,000 KM that smoked so much blue from the exhaust everyone thought the engine was done. Put a liter of ATF in ran the vehicle up to temp and drove it 5km performed a hot oil change, The vehicle never smoked blue and the engine lasted years more.

You should buy a small DIESEL engine to test some stuff as fuel (used motor oil, veg oil, brake fluid, atf etc). THAT would be cool!

You are a true stand up guy. An honor and pleasure it is to have your channel. We owe you a debt of gratitude. Thank you. Keep the magnificent work going!

You have really found your calling as these videos are the very best on YT and you have the perfect personality and your command of the English Language is perfect and is so easy to follow and understand and your type of interaction with the camera as though we are standing face to face with you is a very desirable trait. I wish you much luck and prosperity in the future and keep cranking out these outstanding "How To" videos~!!! You've answered loads of questions for me as just one person out of thousands and thousands.

Hey Project farm, long time viewer. Love seeing all the wild tests you do in your shop. Looks like a lot of fun. Just wanna say keep having fun and doing what you do. Keep up the excellent and knowledgeable videos.

His neighbors must be like "what the he'll is he mowing?!?!?!" As he keeps bringing home pickup loads of mowers, runs them but never cuts the grass. Lol

Thank you for experimenting with ATF. That is exactly what I was looking for! You clearly respect your viewers request's Thanks again!

Years ago, before synthetics there used to be a old mechanic at Ford who used to periodically substitute one quart of ATF when he changed the oil. It worked great with cleaning the lifters. Engine oil has now come a long way since then and now I would only use the recommended oil.

Doing a little binge watching of your channel. Love how thorough you are with your testing. I can see how you have improved your testing over time. My favorites are the comparison of products. Great job!

I appreciate how thorough you are with your testing methods.

We've used ATF to clean automotive engines for decades. That being said, I would never use only ATF in an engine. I can guarantee that the shavings were due to the ATF. When we use it to clean automotive engines, we generally use a 20% - 25% mixture. We always use 1 quart and the rest oil. Afterwards, we run the engine for about 100 miles. Since most of that gunk begins clogging up the filter, we change the filter, top the engine off with ATF again, and go another 100 miles. Finally, we'll drain it all, put in a new oil filter, and use good oil. We do this about every 25,000 miles and it has done wonders for the engines we work on. Still, great video! Thanks a ton for your incredibly interesting channel and hard work!

I added atf for the old motor seal softening. It seemed to help keep main seals from leaking. This was for junkyard motors for the first hundred miles then back to pure oil.

Wow, back in the '70 I ran a quart of ATF in place of one quart oil at oil change. This was in a F-150, 390. While a Ford from then could never have "clean looking oil" you could see the difference using AFT. It helps a lot in cold weather at start up. Got this from working the Oil Patch.

Good vid I had a noisy lifter when i bought truck... Did an oil change (10w30) and new filter drove about 2000 kms, no change. I removed about a quart of oil from the pan, added a quart of ATF, and after about 300kms i dont hear the noisy lifter anymore! Im not sure if the ATF is so much a better detergent, but i believe its a thinner viscosity than the 10w30 and it must have gotten intothe small passages and cleaned out some sludge buildup... I did an oil chamge once the lifter noise was gone, and the oil was very dark in colour. Replaced with new oil and filter, and so far no issues! My grandfather told me yrs ago that they used to pour smalls amounts of ATF down the carburetors when they did tune ups. Says it helped clean the carburetor and carbon from the pistons and valves. You should try mixing some ATF into your fuel in the container for the mower and see if it helps remove carbon from the cylinder head.

Project Farm, you are awesome with your research and engineered tests. I am so glad we mechanical minds have you to test for us. Keep up the good work. You help us save money by keeping our older machines running longer and better.

I love it when RU-vid suggest some of your older videos that I haven't seen yet. This one was great!

I love your work. A sense of curiosity is a terrible thing to let die. Keep it up!

I worked at a Valvoline quick lube in Indianapolis a few years ago. One of the delivery drivers that brought bulk fluids on the tanker trucks had accidentally filled the bulk 5-w30 tank with ATF. Nobody noticed until about 50 cars too late. Surprisingly nobody ever complained or came back with engine damage.

I've added transmission fluid to oil to free a stuck lifter. Then changed the oil after two weeks. Worked great.

The detergent capabilities of ATF are very easily demonstrable and you've seen some evidence of it here, in fact in car engines it has been like wow! I also did it to one of my own vehicles years later after buying it used. The part that made me nervous is so much ending up in the oil so fast. The varnished OHC area instead of having varnish, had clean metal. I didn't run it long that way and made sure the oil was changed when it was good and hot. The guy at the dealership commented that it was very dirty and showed it to me but that was no surprise to me. (I do not do my oil changes myself anymore because for $8.00, recently raised to $15.00, the Honda dealer will change the oil if I bring my own oil and filter, and I don't have to dispose of the oil myself.) On lubricity, we used to put ATF in engines because it doubled the wear allowing more wear in less time for testing purposes. However, we were not involved in establishing that. We simply accepted as fact in Automotive Engineering. However, to their credit, they debunked a lot of theories such as by putting batteries on cement vs. a board for each class, and other things to root out wives tales or situations that occurred a very long time ago when there was different construction and the old tales were still hanging around. Another was detergent vs. non-detergent oil. The myth is detergent oils foam. That used to be the case when they first came out and before most people were born, but it was never the reason for the difference. Cars normally used flat head engines and splash lubrication with little dippers on the connecting rod bolts. In that case, the oil pan was a place for contaminants to settle and solidify. That was your oil filter. Every so often they would drop the easily accessible pan and clean it out. On small engines that aren't expected to have that type of lifespan, it is the same except you cannot drop the pan. With pressurized oil systems, you want to keep it in suspension so you can filter it out. Today, recommendations vary but often non-detergent is recommended and detergent oils OKed because of common availability and more frequent changes. Some recommendations for oil are based on what is normally available. For example, you may have a car with a recommend oil of 5W-20. That same engine today will have 0W-20 because it is now commonly available. You want the first number as low as possible and respect the second number. 0W-20 is not necessarily 5 less than 5W-20. It may be far less than that, which is desirable. Oil is ALWAYS too thick when the engine is cold and is when by far most of the wear occurs. The upper number is its ability to maintain its scuff resistance at normal and high temperatures. The reason on new cars that number can be lower has nothing to do with precision and everything to do with their roller valve train, which adds significant fuel efficiency, which is further enhanced by thinner oil, and reduces wear in many other parts of the engine as well as contributing to longevity. I do get comments at oil changes that it isn't what they recommend, but they have since noted it and don't ask me anymore. Another thing I learned from a friend who has owned tire stores his entire life is to go to the high side on tire pressures, and avoid large wheels which require larger tires. They wear better, ride better, are cheaper, and have much less rolling resistance. The 18" rims rims that came with it are in the top of the garage, and I have 16" rims that look just like them with the same offset and hub size. He was correct. I get great mileage, the tires last forever, and but the increased pressure makes it ride harder. Keep in mind that when you go around a corner, the inside of the tire and outside of the tire have to scrub the pavement, so you want the most pressure on the ground to be the middle because it is the only part that doesn't. Thus, I get better mileage and they wear evenly all the way across. I can tell at the pump every time when I have tires below my desired pressure.

I love using ATF when cleaning an engine by hand during a rebuild. Especially when cleaning the cylinder walls it will get them squeaky clean while also leaving a nice oily surface behind. supposedly a tiny amount of atf in the cylinders on the first start after getting new rings can help them break in better

this is better than any bedtime story

Could you run a second test of ATF on the same engine? The reason I ask is, we couldn't tell if the metal shavings were caused by ATF or cleaned out by ATF from previous oil. However, if a 2nd run came back with more metal shavings, it most likely is causing damage and should be used with caution when cleaning!

I would enjoy spending time with you in your shop on some Saturday afternoon messing with small engines. You really do a great job!

Your tests are the most realistic tests on here & make the most sense, keep up the great work doing them...

I love your channel! I've been here since you only had about 10K subs. Just honest, simple and entertaining videos. Don't ever change! I love your stuff! Keep 'em coming good sir! Good day!

Thank you, actually I have a question but the end of the VDO has answer me already. Good VDO, Salute !

My dad used to add 1 qt of ATF and run the car for a few days on it before oil changes. He worked most of his career as an engine development engineer, for Cooper Bessemer, Continental motors, Deere, and Chrysler. Seemed to work well on sludge & varnish.

Wouldn't take a full crankcase of ATF, but I have used it in a .5 to 1 quart to clean up a motor as you have. And it works great for light cleaning and freezing up striction. You don't need much to get results with all the detergents in the oils to today. Enjoy.

Just crossed this experience while looking for another thing. Great initiative @Project Farm. Maybe the lawnmower isn't the most representative engine for this particular experience. Too few parts, too few exposure to "burn". I heard of the ATF cleaning about 10 years ago while I was trying to figure out how to rejuvenate an old Wrangler TJ with about 200'000km on original engine. I was hugely skeptical. What the heck, replaced 2lt of engine oil by Dextron II. Then forgot about it during an entire summer driving around. When I replaced the oil, it was like black paint. Filter was coated too. Replaced everything and engine was running like a charm. Few month later I had the valve covers removed to replace gaskets. Mechanic commented that the internals were spotless. Asked me if the engine had been reworked or replaced recently. After this, I did same treatment to 2 other Wranglers. And now I do this with my MB CLK 320 (W209). Very different engine, I agree. I replace 1lt (out of 8lt) and drive gently only about 50km with ATF. First time I did this on the CLK, I replaced the filter before adding ATF. I was curious. The filter came out clogged by some sort of black tar. Replaced oil two times to flush everything. Bottomline, ATF does cleanup something. That something is that black soot (or whatever) produced by engine operating. What does it do really? No idea. But my CLK is now well over 200'000km, running like a charm, no clicking or valve noises and passing CO2 inspections without any work done. And I can still easily give Subaru BRZ drivers a run for their ego lol

Back in the 80's we used a quart of diesel fuel and had it come to temp and run for 15 minutes, then drain and change with clean oil and filter in our cars. Maybe you can do a video on using diesel fuel on a lawn mower.

I have heard of this being done, but never tryed it myself. I have added kerosene to the crankcase and run it for one minute and completely drained. Removed all kinds of sludge and crud. This was an old Navy trick my Dad used during WW2 and Korea as an aviation mechanic. Never harmed any engines and Dad said they would be exceptionally clean. FYI

I would love to see a lubricity test between 10w-30 and 0W-20 oil of the same brand. Also test between Dexos certified verses non Dexos oil of the same brand. Also testing an oils anti foaming properties in a blender would be interesting.

I've used ATF free lifters/sticky valves. Now to watch and discover whether I'm idiot or a genius for doing so.

Marvel Mystery Oil has been my “Go To” oil additive (1qt mmo To 4qt of oil) to free lifters and clean sludge and I change it from 500 mi to 2000 mi depending on the amount of sludge build up. I’ve been using this in my repair shop (Performance Motorsports) since 1974 and it works good.

Wow your testing has gotten way more streamlined in the last 2 years! Good job. My friend works on exotics and he told me if you have a sludged engine your replace ONE quart of oil with transmission fluid during the oil change and run it the whole 3000 miles most of the sludge should be gone but if you have to run another cycle so be it. The engine will remain unaffected.

Back in the olden days we would use ATF in the oil and in the fuel tanks of the old two stroke Detroit Diesel engines 238,318 and then the silver series. It helped keep injectors-freed up and keep the inside of the block a little cleaner. The old detroits were noted for converting diesel fuel into smoke and noise. Love your channel and am a subscriber. Question for you, when doing these engine tests on the mower engines do you use a fresh head gasket each time ? Would also like to know your opinion on the harbor freight 3400 jump pack. I have actually witnessed one start a commercial Cummins diesel in a road tractor and the batteries were flat! Have a great day !

Not related to the video, but I unabashedly love your "let's find out" videos. Even with the most bizarre suggestions - like lubricating an engine with Head and Shoulders shampoo - you present them in an entertaining and informative manner. Bravo.

I worked in a small Automotive repair shop. One customer had a Chevy S-10 with a ticking lifter. We substituted one quart Dextron ATF for oil and after few days customer came back the tick was gone. We continued this on that vehicle for several years as I remember.

Oh my god !!! A clear panel so we can see ! I’m hooked on this channel!

I LOVE how you started that mower with an impact gun!! Genuine genius pal...I have no clue why I have never seen it done before..it just makes so much damn sense! 👍 I just wish I had thought of it..about 45 years ago!! Thanks! Great video..as always! 😁✌

Great video! I have a 1986 Nissan 300zx with 200k miles. Every morning on cold starts, the lifters tick for a few seconds until things get going. Sometimes, hard highway pulls make them tick, too. After putting in a quart of dex/merc iv, and driving it lightly for 100 miles, I noticed no more noisy lifters under any condition! Cold starts seem smoother and the engine sounds very healthy now. Only 100 ish miles on that oil and I changed it. The oil filter seemed heavier than any other change I've done at 3-5000 mile intervals. I'm going to cut it open and invesitgate

Watching before sleep. Always love ur videos

Love how you always grin knowing you're doing something cool for everyone thats actually useful

This has become my favorite channel...right up there with Cleetus anyway lol. You don't needlessly waste our time with a bunch of crap that we don't need to see, you get right to the point. Very rare thing these days. Last year I dumped a couple quarts of ATF in an old Ford 460 motorhome chassis to quiet down a tapping lifter that would not get its act together. That did the trick, but still had to leave it in there for a couple of weeks. in hindsight, I probably should have just dumped some diesel in it and idled it for a while

Another video idea, i know you use new spark plugs all the time, i was wondering if you could do a fuel consumption test of a standard plug, platinum, iridium, E3, and a Pulstar Pulse plug

Multi purpose lawn mower for sale. Will literally run on piss if you put your mind too it! You are a mad man hahah I can’t stop watching

The gunk inside some old motors is what keeps them running. Had a friend with a GM 350 ci motor who got talked into having it "cleaned out" and it blew smoke out the exhaust afterwards due to piston rings not sealing anymore. I have found that frequent (every 5000km or 3000 miles) oil changes was all I had to do to keep my cars running trouble free. Cheers

Used to change fuel filters on the Kenworth - hot engine, fill new filters with ATF, install, start engine and rev up to about 1900 RPM ... the amount of soot coming out of the stacks was amazing!

would have been interesting to run the used oil you first drained through the paper filter to see if there were metal flakes there too

you should try testing the use of used atf as fuel in an older diesel engine. I've been running used atf as fuel in my 1993 ford f250 7.3 idi.

I didn't find the experiment where you said canola oil was used in the crankcase. I only found the one using soybean oil. Can you please direct me to it?

I love these videos but I'm curious if any of these treatments hurt the gaskets in an engine. A good test might be to get a few valve cover gaskets, cut out the spark plug seals and let them soak in seafoam, ATF, oil, MMO, etc. for a few months, and see how it impacts their thickness, elasticity, and strength by hanging weight off of them. You could also cook some of them to see if that has an effect.

I'm thinking about adding some ATF to the oil in my old motorcycle engine, to help clean the engine.

The atf works well for cleaning oil paths, cam phasers, solenoids, and the like on modern engines. Used commonly to remedy variable valve timing issues.

I always enjoy your videos and appreciate your scientific approach. Thank you.

I bought a new mower a few years ago fitted with a Briggs & Stratton engine. At the first recommended oil change at ten hours I found what I suspect by the colour and viscosity was ATF. This would have been added at the mower shop prior to delivery. It wasn’t dirty as you’d expect from a new engine and doesn’t appear to have caused any damage. I’ve been using 10W30 at yearly intervals ever since and it’s still going great. I really enjoy watching your videos. Thanks.

I would have liked to see you do a side by side with Marvel Mystery Oil to see if they do the same or no but as always great job.I’m watching the Lucas clear syn. Versus xmas next,can’t wait for results since I’ve always added the Lucas to oil at oil change along with two filters between changes

Im excited for this! Thank you man.

Awesome video. Came across it and had to watch again. Always great stuff. Your one of the best keep up the great work. We out here really appreciate you

First off, Great videos, my personal preferred way of cleaning an engine has always been to pour a quart of atf in the crankcase while I use an iv drip to feed it either seafoam or techron injector/intake manifold cleaner, usually a quart of the stuff takes 30 minutes or so with the rpms held at 2k, I've done this probably 30 times now with 100%, success and clearly a much better running engine after.

Any engine flush should only be run at idle up to temperature and drained, not driven using it. I use 2 oil filters doing a flush, one before I run the flush after draining the oil so we don't wash anything out of the old filter and recirculate it and another one after the flush with new oil to get rid if any traces of it removed before new oil is used.. It certainly works to removing gumming, particularly in multi valve heads where oil is part lube part coolant due to lack of water jacket space, the gumming afflicts overhead hydraulic cam followers making them noisy that an engine flush can fix. Likewise anywhere gumming can cause issues for example oil control ring expanders that gum up and cause the engine to start blowing smoke that isn't worn rings it's just that they are jammed in the gummed oil ring expander. AFT would be fine at a pinch of you had nothing else but I would not drive around with it in the engine. Its fine in a transmission including manual and transaxle and many vehicles use exactly that in them. But they don't have the heat or the plain bearings an engine has. In fact of Formula Vee racing we used ATF in the transaxle instead of gbox oil to reduce power losses in the gbox and less foaming since the engine is revving a lot higher than stock so it was fine in old transaxles under racing conditions.

Diesel in crankcase.....

I'm impressed by your methods of testing, being thoroughly tested.

In the 1980s, I used ATF in a small motorcycle engine, from advise in a motorcycle magazine article. Two things happened: 1) on a summer's day, the crankcase emptied itself all over the back tire. Never understood why. 2) that winter, the engine seized. Piston con rod needle bearing disintegrated, with bearing parts in the cylinder wall, piston, head, everywhere! Lesson learned. Stick with motor oil!!!!

Cool video! Have you tried diluting the engine oil with diesel fuel yet? I can't remember. But that's another "old school" trick for cleaning out sludge buildup.

ATF in engine oil is fine in moderation. Using straight ATF in an automotive engine will result in premature engine failure as it does not contain several additives that modern DexOS or MST rated oils have. It may only take 20k miles off the engines life, or it may reduce the engine life to 20k miles. The more important distinction is the way it deals with combustion byproducts, ATF has nothing to deal with the acidic byproducts from combustion which means that in a short period the oil will begin to etch the metal (even in aluminium blocks) and eat away at gaskets, whereas engine oil has additives to neutralize the acids in combustion bypass. However, in a 5qt engine, 4-4.5qts of engine oil and .5-1qt ATF has beneficial effects due to the far more concentrated detergents due to its intended lifespan and requirement to keep valve bodies clean and free from buildup. Several of my old instructors have used a 10-20% ATF mix in their engines for decades, and I have used a 20% mix in my engines for half a decade without any negative effects. I replaced the valve covers a few years ago and the rocker assemblies looked pristine, granted I have no clue what they looked like when I bought the truck.

I personally have no experience with using ATF as a substitute for motor oil. However, I have friends who are into ATV and dirt bike racing. They regularly use ATF in their 2-cycle crankcases, swearing that it reduces drag. I thought it was interesting to see your lubricity test suggest otherwise. I will definitely be recommending this video for them to watch!

Hey Project Farm. I was wondering about you making a video on different engine oil weights and types. There is rare specification data on the web for the cold start weight 0w 5w 10w 15w etc. It would be an interesting video seeing your various testing methods on a wide range of engine oils. I appreciate your attention to detail in testing methods and allowing the product you are testing to be the only variable. The science you show is incredible. Thank you for the content you create.

I'd like to see a comparison between ATF and Marvel Mystery Oil.... I always had better luck freeing lifters with Marvel.

I LOL’d. “This is the motor I ran with canola oil..” Your channel is the best!

Hi Project Farm! Thanks for all the great videos; I really enjoy the topics and your approaches to create the test procedures and equipment! I had an idea for a new project video: Could you test ATF at different temperatures to examine their performance after being subjected to set periods of time at normal to extreme temperatures? I know I have seen quite a few charts from the transmission industry, that state the useful life of ATF, depending on the temperatures that the fluid is exposed to. For example, these charts will say if you can keep ATF temps below 175F, the fluid should be good for 100K miles. However, a temp of 220F (for how long?) will make your fluid only good for 50K miles or less. I know my Toyota Tacoma has a factory spec range of 122F to 176F, although I see temps higher than this (200F) during mountain road climbs (in my case, temp measured at torque converter outlet to cooling circuit (worst case/highest instantaneous readings)). I think at 300F, the "AT Oil Temp" light comes on, but I have never seen that! Anyhow, I take good care of my transmission (300K miles and 17 years on original unit), but I think a lot of your viewers would be interested in seeing an ATF video. Initial lubricity baseline, cold flow test, followed by exposure to several high temperature ranges, followed by lubricity checks against the baseline. Thanks again so much for the great content. Keep up the good work and I look forward to many more videos from the Project Farm!

Small 4 strokes are so fun. Your approach makes it even better. Good stuff my friend. All I can figure from the cylinder with the trans fluid is that its blowing by the intake valve seal since its less viscosity and cleaning the piston at the compression stroke. the plug showed it was burning more than fuel. Thats how it looks to me. Almost like it has a coolant leak but its air cooled :D Alot more crust around both valves with the trans fluid, especially the exhaust. May have crept past the oil ring as well. Trans fluid is water compared to even 5w20

Works great i did that in my 3/4 Dodge P.U. with the 8.0L v 10, no problems at all.....

That "Clear View" window was awesome learned a lot from this video. You should try Transmission Fluid in the Gas mix.

Currently at school learning about heavy equipment and machinery. Mostly 18 wheelers but some cars and trucks but mostly diesel. My instructor always recommends atf to clean out a crank case and to stop noisy lifters. He’s been doing this fro years and he said he’s never had a problem and it’s always worked great so I’m actually going to give it a shot

Was just going to suggest this on another video but decided you had probably already done it before and it showed up 3 videos down on my homepage. lol

I put a quart of automatic transmission fluid in my engine before I change my oil write up for a couple days a week and then change my oil haven't had a problem been doing this for years

Try Vaseline instead of oil! Might have to melt it to make it work lol

Would love to see a test with your lubricity tester between new transmission fluid, and OLD transmission fluid from a transmission with 100k miles on the fluid (some people think you should never change your transmission fluid). I bet that old transmission fluid is like leaving sandpaper in your trans!

I appreciate your comprehensive work. However, until recently I've only changed oil every spring. My lawnmowers run for 25 years. I have 3. The fourth I had to just because the shaft was bent (I shoulda tried bending it back to straighten). I'm content to change oil frequently. I never used cleansers in my engines.

Atf is same as motor flush Old trick was to use type f transmission fluid to free up stuck dirty parts

When using ATF I've always used one qt with the rest oil. The atf finds it's way into the lifter and the detergents help clean the engine. Never done it in a new engine but have several old ones with success at making a lifter quiet down.

I used to disassemble and rebuild 5.9 Diesel engines. No better hand cleaner for removing grime from your hands than atf lol. The detergents are very aggressive in it , designed to clean. One of the highway tractors that we haul cattle with had a diesel injector sticking . We added 4 Liters to 100 gallons of diesel fuel. I could see the smoke from over fueling out of the stack. At 150kms it stopped smoking and the engine ran normal. Thanks for actually showing me how it does actually clean inside a engine! Keep up the great content and work! Love your videos!!!!!!!!!

The very 1st video I watched was sea foam in yr put. Been a fan since. As always interesting and detailed video. Well done ty

What if you were to use chainsaw bar oil instead of engine oil?

ATF is really only used in engines with high mileage to get rid of the sludge free up the lifters but I would absolutely recommend it before anything else

One thing that ATF is good for is quieting the squeaks in the rubber bushings at the end of leaf springs. A few squirts from an Eagle pumping oil can a few times a year works pretty well.

Your channel is one of the coolest on youtube 👍🏻. Thanks for all of your work.

When I was 14 my friend and I had a Dodge Dart that we thrashed through the desert which caused a trans cooler leak. I talked him into using used motor oil to fill the trans cause, “oil is oil, right?” The car puked the oil back up the fill line and caught the engine on fire, 😛

i had a friend that ran a wrecker service he did not use pennzoil it is pariffen based and makes waxes when it breaks down and he would add 1 quart of transmission fluid when he would see collar in his oil then run 500 miles generally in 1 day and change his oil i helped rebuild his motor when needed he got 1,000,000 mile out of a small block 350 ruteenly and the engine looked almost as clean as new when we rebuilt them.

Hi Todd, thank you for all your work... I just bought a hydraulic pump for a log splitter and the pump manufacturer says to use a good quality ATF for all season use... Have you ever heard of using ATF instead of hydraulic fluid? Makes me wonder if it is a typo??

I know this is an older video but I still found it useful. I have a 2017 HD Street Glide. The lifters started making a lot of noise at startup within the first 1200 mile weekend ride. I figured if it was already broken, I would use amsoil synthetic atf to clean the lifters. I ran it for 1000 miles and the lifter noise stopped at about 300 miles into this cleaning. on the next oil change I switched to amoil 10w50 dirt bike oil. the bike is performing very well and not making any noise at startup. next oil change is this weekend (3k mile intervals except for this test for 1k), I will go back to the amsoil 20w50 and I am going to Blairsville for vacation. I would not want to push my luck and will just see if this amsoil atf actually cleaned lifters!

Do best rattle can bedliner durability test.

Sure it'll work but I don't know about the detergent additives regular motor oil has. 5 and 10 weight engine oil is a common thing but not for me. I LIKE my oil pressure! GOOD TEST, COMMANDER! The BEST 2 yall!

Used DEX 3 to replace 1 quart of oil in my old 96 3800 firebird. After its first start in 10 years, the lifters were nice a loud. Ran it for roughly 3-5 days each with about 30 minutes of drive time and that engine never made another sound again. I did use new inexpensive oil with my ATF.

You're video's are totally amazing. Me and my wife watch them all the time. I seen you're one with epoxies, have you ever heard of Marine Tex? I used this stuff when I had a boat and it was amazing. If you have a video with it in it can you give me a link to it? Thanks so much and keep making these awesome videos.