How Bad Are Cheap Motor Oils? $14 vs $58

Mobil Delvac, Rotella T6, Royal Purple, Schaeffer’s, Hot Shot’s and Amsoil. I paid an independent oil testing lab to analyze all of the motor oils, and I performed my own testing for lubricity, resistance to thermal break down, and oil flow characteristics.
I bought all of the motor oils, paid for the oil analysis, and all of the supplies used in this review. I always pay for everything out of my own pocket to ensure an unbiased review. So, THANK YOU for supporting the channel.
➡ Thank you very much for supporting the channel through Patreon: / projectfarm
➡ Thank you for supporting the channel through memberships:
/ @projectfarm
➡ An easy way to find past videos along with products tested: bit.ly/2FCrBpk A big thanks to Jim for putting this together.
➡ Merch: project-farm.com
➡ Click here if you'd like to subscribe: / @projectfarm
➡ As an Amazon Associate I earn from qualifying purchases.
➡ Products Tested In This Video (in no particular order):
Mobil Delvac: amzn.to/44Huvkm
Rotella T6: amzn.to/3K7VmMI
Royal Purple: amzn.to/44LrzTB
Schaeffer’s: amzn.to/4bDNbn9
Hot Shot’s: amzn.to/4dJMKJS
Amsoil: Available at the online Amsoil store
Oil Analysis Results: www.patreon.com/posts/diesel-...
Videography Equipment:
Canon EOS R6 Mark II: amzn.to/4aErF18
Canon 70D Camera: amzn.to/31b5Gy0
Azden Microphone: amzn.to/34d3DLE
Go Pro Bundle: amzn.to/3Ca0ZVN
This video is only for entertainment purposes. If you rely on the information portrayed in this video, you assume the responsibility for the results.

[@LoneStarGarage832]

Laundry detergent please! You could test for oil, grease, grass, dirt, ketchup, sharpie, etc. Consider your audience, we need this!

[@jonanderson5137]

And additives like borax/oxyclean/vinegar/baking soda. I don't know if it's good or not but my 6+ year old washing machine got closed over a long weekend and was nasty! I tried a bunch of different things to clean it, but the best way that I found wash it was to run it empty until the high speed spin cycle started and adding enough drain cleaner and water to sit inside the drum and let the spin cycle beat it. Went from nasty mildew sour to odorless. Before that I tried vinegar, baking soda, bleach. So I'm not sure if one of them loosened up most of the crud or not, but it really cleaned up nicely.

[@awake780]

@@LoneStarGarage832 spot treatments too

[@anastaciomartinez8873]

He's done a video or two of detergents

[@petermontoya1796]

Tide.

[@billgraham5609]

I'd like to see the home made laundry detergent compared as well.

[@highwayboyjon9517]

It’s 3 am. I don’t own a diesel.

[@ProjectFarm]

Thanks for watching!

[@NickMango]

😂

[@malachihornbaker5869]

2am here and I don’t either😅

[@penislandfishing1607]

I've used t6 in everything from my gas cars to my lawn mowers

[@ryanfriars545]

Too funny lol

[@mdforsberg49]

Our whole semi fleet switched to amsoil and we've seen 30% less repairs with millions of miles tested. Use to run rotella like every shop but the results have been speaking for themselves. Great channel!

[@ProjectFarm]

Thanks!

[@hkfan4596]

zero chance amzoil is making the difference

[@mdforsberg49]

@hkfan4596 we send oil samples in ever 10k miles I can assure you it's the amsoil when we couldn't get it for a little bit during covid shortages we ran rotella and ever oil sample showed higher wear materials from bearings. The valvoline blue actually performed better than rotella. When we first switched we did half our fleet to see if cost difference was worth it in our trucks on rotella engines laster around 500 to 550k miles. Amsoil constantly hit 900k and above which is good for heavy haulers

[@lukaswildner8040]

What are your intervals if your engines last only 500k? I mean, seriously, do you do oil only once every 100k?

[@gahbah274]

​@@lukaswildner8040Logging trucks maybe?

[@decodeddiesel]

I am a mechanical engineer with autism and OCD. This is by far my new favorite KZbin channel.

[@Terpaholic_Tendencies]

Thank you for your dedication and service to our country. Godless you and your family! 🇺🇸

[@iMentu]

Awesome to hear brother. Congratulations on the achievements in life and keep on pushing!

[@ProjectFarm]

Thanks!

[@marcowulliampopirers2216]

ok but who asked

[@Terpaholic_Tendencies]

@@marcowulliampopirers2216 the same person who asked you to comment

[@pjkentucky]

Project Farm is still the hardest working channel on KZbin!

[@ProjectFarm]

Thank you!

[@JeffinTD]

Agree. The hours of hard work that goes into these excellent videos is greatly appreciated.

[@GorillazGames]

Clearly...

[@gregquinn6827]

And with great purpose besides mere entertainment! Bravo!

[@sysierius]

For sure!, also best test channel on KZbin

[@tracybowling1156]

I don't have any diesel engines. But oil testing is always fun to watch!

[@ProjectFarm]

Thank you very much!

[@danteerskine7678]

I also don't have any diesel engines, yet I use heavy duty diesel engine oils in my petrol generator and my electric air compressor (also recommend multigrade 15w40 as mentioned in it's manual)

[@ThirteenTwentyRepair]

Not just diesel, I started putting diesel oil into my gas engines 20 years ago when they started taking zinc out of engine oils. It’s kept all my old flat tappet (pre 1988ish) engines alive.

[@JeffinTD]

@@ThirteenTwentyRepair Yeah. Years ago I did some general farm work. Rotella not only went into the semis and big tractors but also into atv’s, mowers, welders, generators.

[@ObsoleteVodkaYT]

I don't even live in the US so almost none of these videos are of use to me. That said the methodology here is impeccable, this man is doing science and boy it's a delight to watch!

[@swat1229]

As a motorcyclist that uses T6 and T4, I'd love to see them pitted against purpose made motorcycle oils.

[@ProjectFarm]

Thanks for the suggestion.

[@blythkd9017]

Yeah same here, I've used T4 with outstanding results for years, especially on my wallet. Would love to see how it stacks up in lab testing. Engine results have been near perfect.

[@swat1229]

@ProjectFarm specifically an anti foaming test would be cool. I've heard although these are wet clutch certified, they don't stand up to the revs as well.

[@scottkelso4453]

This is a great idea.

[@CreatingExcellence]

Same here. I running T6 in my bike currently. I’d like to keep running it but I’d also like to see how it compares to a full synthetic oils that are manufactured specifically for motorcycle use. I change the oil in my bike every 2,500 miles anyway. So I’m probably fine no matter what I use.

[@codyprine9200]

I love how your videos are thorough, objective, and fair for each test you do! Thank you for your contributions to this platform and to all of your everyday views.

[@ProjectFarm]

Thanks and you are welcome!

[@ihydgm6991]

Would be nice to see you test multimeters, checking voltage, amperage, and resistance accuracy, seeing if the cheap $50 multimeters are as good as the more expensive ones

[@ProjectFarm]

Thank you for the video idea!

[@AniviaS]

Aneng has some cheap multimeters with amazing precision nowadays. Not too long ago it was impossible to get a good multimeter for under $100

[@virtualcommunitytheatre]

I'd also like to see him compare multimeters!

[@spacekadebt1641]

I need a multimeter. Sounds like a great video idea!

[@windrider65]

I've got two meters I built in highschool, one analog and a digital. 40 years later, they both still work like new, they don't look as good, I still use them today.

[@oby-1607]

Shell Rotella only in this household. Two Kenworths, three John Deere field tractors, two Kubota tractors, three diesel pickups. All run this oil for years with no problems. Change any oil when you should and there will be no problems. We always change before the recommended time interval.

[@jamesvuxta8723]

I agree with you to a point till you put the def and the EGR systems into play and they can wreck that idea do away with them and I'm with you

[@SH-di8im]

Rotella oil used here 1998 Peterbilt with a 12.7 Detroit I’ve got no complaints.

[@volvo09]

Everything in my arsenal of vehicles and engines is running 5w40 t6. 140k miles of use in my supercharged civic, and so far 50k miles in my f150 with the 2.7. My lawn equipment gets t4.

[@Slim..]

I use Rotella T4 15w40 in my 2010 Honda Goldwing, many other motorcycle owners also use Rotella.T4 15w40.

[@malekodesouza7255]

Ditto. T6 in a Superduty 6.0 and that engine is finicky as hell.

[@charleywalker2982]

Another great unbiased review that we can trust. Most oil reviews are sponsored and they are biased to their oil. Thanks for doing these reviews and keep them coming please.

[@ProjectFarm]

Thanks, will do!

[@electronicsNmore]

Great video as always! We have your thorough testing along with each oil sample analyzed. It doesn't get better.

[@ProjectFarm]

Thanks!

[@isaacbrewer5616]

It’s so crazy how oils with the same viscosity rating act so differently in different temps. Especially the cold temps! Thanks for your great videos!

[@ProjectFarm]

You are welcome! Good Point!

[@nathancordes912]

I wonder what they actually tested for viscosity compared to what the bottle says.

[@connor3288]

To my knowledge, the product viscosities are approximate. For example, brand A may be thicker than brand B, but would still fall in the same viscosity rating range, such as 5w30, etc...

[@rhkips]

Rotella's price to performance ratio is why it's so common in fleet applications. It's not the best, but it keeps costs low in an environment with controlled service intervals. Consistent, regular oil changes are more beneficial than any additive package that exceeds OEM requirements!

[@ProjectFarm]

Thanks for the feedback.

[@jason200912]

in fleet operations you should totally be using amsoil or pennzoil ultra prem. Those vehicles are run HARD and seriously need that oil protection. Now if it's fleet as in car dealership sitting on the lot then obviously it's barely run at all and you can get away with anything

[@rhkips]

@@jason200912 Go work in a large corporate fleet management facility that oversees thousands of vehicles. Paying 3-4x as much at each oil change, versus the average vehicle lifespan and average repair costs over the life of the vehicle, there is absolutely no financial incentive to spend that much on oil. Factor in vehicle depreciation into this equation, and it makes even less sense. Any oil that meets manufacturer specifications is more than enough for fleet, even in a severe duty application. Oil analysis is common with large, internally-managed fleets, but only to either confirm current service intervals, or to determine if modification is required or financially beneficial.

[@williampremo2197]

I enjoy how thorough you are with these tests. Excellent videos!

[@ProjectFarm]

Thanks and you are welcome!

[@BanjoWorx]

Thanks Project Farm for such a great video once again. This confirmed my choice of Schaeffer's for my 7.3L. Been using it for 4 years with great results!

[@ProjectFarm]

You are welcome! Thanks for the feedback.

[@tucobenedicto1780]

When you go onto some diesel forums, the folks will often swear by Rotella. Nice to see this test show Rotella's performance much more objectively.

[@ProjectFarm]

Thanks for sharing!

[@thegarbagegladiators4735]

I use Rotella and after this video ....I might switch. What are your thoughts?

[@jordan1748]

@@thegarbagegladiators4735rotella is junk. Tear apart a motor thats ran anything else its whole life vs rotella its whole life.

[@AngelRodriguez-ml7rh]

I've used Rotella T6 since i bought my truck with 82k, now it is 301,044k no issues. Idk man, has worked fine so far.​@thegarbagegladiators4735

[@SaulVTXFRIDER]

T6 is top notch quality oil for half the price of other oils.. youll be fine with any of these oils as long as you change the oil on time every time... I will never change oils ..T6 all the way for the price and quality it has no competition ​@@thegarbagegladiators4735

[@Brian_L_5168]

Video Idea: testing Rotella T4, T5, T6 just to see how the same brand stacks against each other. As long as ICE engines are still around, we can't wait to see ANY if your oil testing. Amazing presentation as always ! 💯

[@marcelo403polo2]

Yeah. I used just T4 and never a problem. Just got new truck and not sure how T4 would compare to T6

[@TruckingTrucks]

T4 is what I've wanted to see on his channel since his first oil test.

[@Slugg-O]

Agreed. I like Rotella but I'm also on the fence with T4,5, and 6. I know T4 is great for flat tappet engines but I've heard inconsistent reports on the T6

[@TruckingTrucks]

Rotella T4 vs against Mobil Delvac? 2 biggest choices for semi trucks!

[@samdixon6867]

I agree please test the Rotella family of 15-40 oils

[@cabilgibbs]

Weve come to be able to expect great work from you! Thanks !!

[@ProjectFarm]

You are welcome!

[@BigJim-wj4xr]

Another awesome video. Very informative with very popular oils. Thank you

[@ProjectFarm]

Thanks and you are welcome!

[@TheWilber09]

Give me the rotella over any of them. Cheap. And readily available. And excellent, proven oil.

[@ProjectFarm]

Thanks for the feedback.

[@noneofyourbusiness5910]

​@@ProjectFarmRotella t5 or t6 all day

[@Critastic]

True, the easy access and cost makes the rotella great, it’s also good oil. Amsoil is the absolute best but you pay for it.

[@vivillager]

I run Rotella on the daily, bobtail, towing overweight, never a problem in decades. I have run Amsoil, but only for seconds at a time, sledpulls

[@Critastic]

@@vivillager people definitely runs oils too long and then blame them when something goes wrong, running rotella and changing it in a timely manner is the key. I just changed the oil on my tundra yesterday, I had amsoil signature in, it had about 11,000 miles on it. It looked brand new, almost felt bad disposing of it haha. There’s no doubt amsoil is top tier but man the price is hard to swallow.

[@olannakprasitno.5312]

Alone Night Shift as a reception at 12:00 AM in Thailand. Watching you vid.

[@ProjectFarm]

Greetings and thank you!

[@sugarnads]

Just flew home from thailand. Cant sleep (im in australia) so derr Im wwaching this

[@wailingalen]

Hope you have a safe night shift 😇

[@Dwigt_Rortugal]

Sawatdee khop.

[@olannakprasitno.5312]

@@Dwigt_Rortugal Sawas dee krub

[@chiliboom6140]

Thanks for this video man! Great stuff as always. I always look for one of your videos if I’m debating between a few items. Keep rocking it!

[@ProjectFarm]

Thanks, will do!

[@alexteeters4.0]

Once again great information, thank you for what you to tod. Keep it up.

[@ProjectFarm]

Thanks, will do!

[@Slasher42]

Do I own a diesel? Nope. Do I plan on owning one? Nope. Did I watch the whole video? Yep. All your videos are so well done and very informative! Thanks for your work.

[@ProjectFarm]

You're welcome!

[@golfbravowhiskey8669]

I'm 61 years old, and since I was able to use all in all of our equipment it's been nothing but Rotella. I have rebuilt my John Deere dozer engine which had close to 9000 hours on it and it still looked good on the bottom end, not to mention all of our logging skidders they get the piss used out of them and never had any problems out of Rotella

[@wadepatton2433]

Rotella has long been the golden standard of diesel-equipped industry.

[@Wil_Liam1]

I use Rotella in everything including my atvs,dirt bikes,Harley and Suki street bikes,pickups,zero turn,push mower,etc and I've never had any bearing,buildup or wear issues in any of them,nor in any of my big trucks throughout the decades... I swear by Rotella and won't use anything else anymore...

[@dangoldbach6570]

Bottom line here... rotella may not be the best but it's really, really good!

[@omieyouknowme]

Most of the real heavy duty truck repair shops carry rotella or delvac not the other brands. Good enough for me.

[@lesterpeters1504]

there is a lot that goes into great engine life. i use rotella t6 change it every 5 thousand miles, good quality oilt filter and keep the air filter changed regularly. the results have been great especially when considering i have save hundreds of dollars over the years one the price of oil.

[@Ollerecovery]

I like the fact that you present the data quickly and talk fast, you're quick to the point :) Good job.

[@ProjectFarm]

Thanks!

[@jamminwrenches860]

Me too. I usually speed up playback to 1.5 for most all KZbinrs except ProjectFarm.

[@thelightaddict80k]

Thank you so much for including Schaffers we use it in all our equipment where appropriate and it works beautifully.

[@ProjectFarm]

You are welcome!

[@AquaticLogic]

Canadian here. The cold flow with the Hot Shots was WILD! Thats a game changer for winter diesel starts, especially in Powerstrokes with HEUI injectors that need oil pressure to start.

[@ProjectFarm]

Thanks for the feedback.

[@donaldardell5742]

You might want to run 5W40 in the winter if flow is a concern.

[@ericestep9880]

That’s why you use rotella 5w40 t6

[@liquidrockaquatics3900]

That’s when all the damage occurs as well. It’s a good thing the oil is pumped and doesn’t rely on gravity

[@AquaticLogic]

@@ericestep9880 You mean 0W-40?

[@RalphMercuroMusic]

The Shell Rotella T6 has been a common oil used in the motorcycle racing community for decades. Sportbikes (Except for some Ducati's) have a wet clutch. The transmission and engine are within the same cases and share the same oil. Motorcycle specific oil can be VERY expensive so some of us started using T6 around the year 2000. As your tests show, it contains 0 Molybdenum. Thats what makes it safe for a wet clutch. Racers also change the oil often. Usually every weekend if not more so the cost savings can be significant. My own experience is over 25,000 miles each on two Yamaha R1's with no engine, transmission, or clutch issues.

[@ProjectFarm]

Thanks for the feedback.

[@rgr4475]

Yup, back in my sport bike days it was always T6.

[@briankalagher6687]

What year is your R1? I have a 99 that I run 15w 40 T4 in for the last 10 years or so and I love it. I don't know if it's all in my head but the transmission seems to like T4 better than T6 even though I want it to like the synthetic better. I tried Delvac 5w40 full synthetic 20 years ago and it hated it. 55K miles now on the original clutch so I love Rotella.

[@BrianNC81]

My Yamaha waverunner with MR1 engine (R1 engine adapted to marine use) loves T6. It spends countless hours at 9-10k constant RPM.

[@GPz84]

It's not in your head. Reviews show that many users find better shifting with the T4 over the T6. Either one is a great oil. What people don't know is Shell changed the formulation on the T4, Though not listed on the bottle it is now semi-synthetic and states it on their website.

[@jerryking3208]

Thanks for you honest and fair test results. I’m changing my diesel oil from Mobil to Shell. It makes sense.

[@ProjectFarm]

You are welcome! Thanks for the feedback.

[@fuse8052]

I watch your videos before I buy anything now! Just the most useful , informative and non biased videos!

[@ProjectFarm]

Thanks!

[@josephpacchetti5997]

Well...I've run out of ways to say how great your channel is, Thank You Todd. 👍🇺🇸

[@ProjectFarm]

You are welcome!

[@salman13]

​@@ProjectFarm No liquimoly?

[@Slane583]

@@salman13 Liquimoly is a German brand oil made in Germany. These are all US oil brands made in the US. He's testing domestic brands that are readily available on shelf. While I have seen Liquimoly additive sold in parts stores none of them sell the oil.

[@salman13]

@@Slane583 ah ok. I get them from fcp. Everybody says they're the best on bimmer forums so was curiois

[@andydelassus2734]

“The Rotella isn’t the best at anything, but it’s actually pretty good at just about everything”. Me and Rotella carved from the same stone

[@chihuahuaverde425]

😉

[@NemoConsequentae]

_"Jack of all trades, master of none. Offtimes better than a master of one."_ So many people forget the second half & reverse the intent of the saying.

[@GoldenCroc]

Me too except the inverse; bad at pretty much everything 😅.

[@blightedblue2762]

Thank you thank you thank you I have been asking for this exact video with several of theses oils, you are a legend you are a hero you are the GOAT I have watched you for years and this video is everything I have ever wanted

[@ProjectFarm]

You are welcome!

[@p-townturbogoat2646]

Hey man great video, I remember making a comment on one of your videos about testing and you finally did it!

[@ProjectFarm]

Thanks!

[@denniss5512]

I packed Schaeffers aerosol products back in the 1980-1990's. The head chemist was Mike Ryterski. Guy was a genius. So many different products, all top notice and a hometown company. He always put the good stuff in his products. Their compressor oil dropped our rotary screw temp by 20'F. Most unusual product was a zinc bearing goo used on huge dredging machines. 1 can to a wheel. Offset wheel device would run on a rail track, pick the whole machine up and move it 8 to 10 feet. Extreme Pressure!

[@kaboom4679]

Their beer isn't the same since Pabst bought them out ...

[@ProjectFarm]

Thanks for sharing.

[@TEAMWRIGHTEOUS]

I never realized they started putting motorcycle pics on the Rotella. We've been using it for years in bikes. They finally caught on and promote it now.

[@ProjectFarm]

Thanks for sharing!

[@Dwigt_Rortugal]

That stuff is pretty good in just about anything. I used to run T6 in my Jeep 4.0 AMC straight 6 and it loved it.

[@offroad8055]

Yeah that’s new for sure. Same here….been using it in bikes for years👍

[@Chinesefoodrocks1521]

What do you run it in? I was looking at it but it doesn’t hold the JASO MA rating.

[@mikeyoung4017]

I've been using it in the primary on my HarleyDavidson for a while now and it works great

[@Carolina_Ken]

Great video! This is exactly what I was asking for! Thanks again

[@ProjectFarm]

Thanks!

[@Ben-rz5wl]

Love these oil comparison tests.

[@ProjectFarm]

Thank you!

[@monsaka7827]

I started out my working career as a diesel mechanic. My boss swore by shell rotella T before most of those others even existed. He showed me the difference on engine teardown. Shell engines were clean inside. The Delo engines had a thick sludge layer that had to be cleaned off. On cars it was the pennsoil that left the worst sludge behind.

[@bobg3034]

That probably was the oil Pennsoil that a had a wax base?

[@hid3nax]

FYI, Pennsoil and Shell is the same company

[@magichatake]

@@hid3nax they are, but they manufacture different segments of products

[@SH-di8im]

That is great to know. I have used Rotella oil the last 10 years got no complaints.

[@ProjectFarm]

Thanks for sharing.

[@thecarman3693]

1:41 Thanks for emphasizing that -40 degrees does not need a descriptor, as it's where both Fahrenheit and Celsius scales converge. Another great video as always.

[@ProjectFarm]

Thanks!

[@stravis3269]

Thank you , from Nebraska. We love your work!

[@ProjectFarm]

Thanks and you are welcome!

[@glencrouch442]

Can't say enough about these test, simply love em, and they are extremely helpful!

[@ProjectFarm]

Thanks! Glad they are helpful!

[@danielparsons3995]

Every video I watch from you on every Sunday at the end of the video I always tell myself "and today I got this much smarter" and it's true because you teach us so many things with bad products and good products with no bias remarks. The best KZbin testing channel I ever watched so glad to watch every video you make❤

[@ProjectFarm]

Thanks so much!

[@PersonalBestOutdoors]

Been using rotella t6 in all of my diesel trucks. 02 f350 7.3l powerstroke zf6. 246k miles. 03 ram 2500 5.9l cummins 48re 242k miles 05 f650 6.0l Eaton Fuller 5 speed. 96k miles. 07.5 ram 3500 DRW 6.7l cummins g56. 143k miles 08 f750 6.7l cummins Alison auto. 104k miles. All of them (even the 6.0) are on the original block, zero blow by, healthy compression, and have never been rebuilt. I own a tree service, so they get worked hard daily hauling wood, machinery, chips etc. Sure, other oils may be better in certain categories, but for the price, in my opinion it can't be beat. I used to have a 93 ram w350 dually on a 5 speed. I bought it with 380k on the clock. I knew the original owner. He told me he only used t6, so I kept with it. Over the next 10 years it earned another 300k miles. I sold it just shy of 700k on it. Original rings, pistons and block. It had a different head. But I was pleased to see that it needed no cylinder work when I pulled the head to replace it. T6 has proven itself to me. I'll probably never use anything different. Especially when the better performers are 2x more expensive. I do use the hot shots secret diamond g56 oil in my 07.5 6 speed ram dually. Fantastic stuff. Excellent review and video as always, Todd. Thank you for all you do.

[@ProjectFarm]

Thanks and you are welcome! Thanks for sharing.

[@SIXPACFISH]

As always, another great video from the Farm!

[@ProjectFarm]

Thanks!

[@FutureSystem738]

Thank you, as always, love your work. 👍

[@ProjectFarm]

Thanks and you are welcome!

[@jaredowens8751]

All of your videos are so amazing. I've shown so many of my family and friends your videos. They are so well made and informative. Thank you so much for all that you do

[@ProjectFarm]

Thanks and you are welcome!

[@bigjay6743]

I live in cold cold Canada. I buy the cheapest oil on sale at the time I don't use a certain brand I just use the cheapest oil. I've done this for 42 years. I change my oil religiously and I've never had a problem. The important thing is to just change your oil and to never push it to far.

[@ProjectFarm]

Thanks for the feedback.

[@stevebevington9863]

Truth! Best reply to and oil thread I have ever seen.

[@josepeixoto3384]

i live in a moderate climate in Europe and i've been doing the same for 40 years too; in my cars i always use the cheapest OIL i can find; i'm a mechanic

[@rich8037]

I live in the very moderate UK, drive low-performance cars and don't usually drive them hard. I use cheap oil and never change it (after buying the car - used - because I don't know what was in there). I do change the oil filter frequently, though. I have never had a problem attributable to oil troubles, but who knows what other cars and driving styles might show? PF's tests do indicate that even the cheap oils provide decent baseline performance, anyway.

[@Munakas-wq3gp]

@@rich8037 You must drive very cheap cars if you want to risk engine damage vs changing the oil once a year.

[@joz_tec]

Another objective, great comparison. Thank you.

[@ProjectFarm]

Thanks and you are welcome!

[@chrismack6027]

My favorite part of the weekend. A new Project Farm upload!

[@ProjectFarm]

Thank you!

[@aceofspades9833]

TODD YOU HEARD AND ANSWERED MY PRAYERS!!!!!!! No seriously thank you so much man you are my FAVORITE youtuber by far and I look forward to your videos every Sunday!! Ive been requesting this one for years it feels like! I am so excited. Thank you @Project Farm

[@pssstttchhh]

Calm down

[@ProjectFarm]

You are welcome!

[@clinkerclint]

Lol I've been requesting this one for a long time too! I'd love to see a full lineup, 15-40 showdown.

[@aceofspades9833]

@pssstttchhh go touch grass and loosen up buddy it's a joke lol I've been requesting it for over 3 years😂😂😂😭😭

[@1hotahi964]

2015 Ram 3500 6.7 Cummins. Ran Rotella for 50,000 then switched to Amsoil. Been running Amsoil for 60,000 miles now. This is my first diesel and was bought new. I have been running Amsoil in all of my vehicles, bass boat, dirt bikes and Harley for the last 25 years. Love it and justify the price on longer changing intervals. Disappointed in the cold oil diesel test portion, luckily I am on in the Southwest for a lil milder temps. Great video like usual!!

[@ProjectFarm]

Thanks! Thanks for sharing.

[@BGM_Rabbit]

Awesome to see another oil test video!

[@ProjectFarm]

Thanks!

[@ED-ti5tc]

I used to use rotella t4. My friend uses delvac. Neither of us has had any issues. We ran 12,000 mile intervals in our Detroits. No problem with either. Great video!

[@ProjectFarm]

Thanks!

[@Andriig75]

I use T4 on my two motorcycles. Over 30k on each. Good stuff

[@simonsays582]

Schaeffer's did a customer testimony video of their oil. It was Urfer trucking company 30k oil change intervals on a 3406 cat engine. They broke the engine down at a million miles and it was spotless, still like new.

[@ED-ti5tc]

@@simonsays582 That's impressive!

[@GPz84]

There's a reason why so.many fleets run Rotella, especially the T4...because it works.

[@ProjectFarm]

Thanks for the feedback.

[@alinatamashevich3354]

Because it is cheaper at the fleet/wholesale level!

[@emondrag]

Thank you! Just started a motor oil/lubes shop. This is great info.

[@ProjectFarm]

Thanks! Congratulations on your oil/lubes shop.

[@StormofCrows69]

Thank you, this is exactly what I was looking for recently with the T6 and Amsoil

[@ProjectFarm]

You are welcome! Glad to hear!

[@kevinc.8869]

I have been using Mobile Delvac for years and years. Never a problem. And I run T-6 in the winter when temps are going to be Sub-Zero. I learned that from your previous video, a few years ago.

[@ProjectFarm]

Thank you for the feedback!

[@tonep3168]

Love your videos! The gold standard for technical product testing. Thanks for all that you do for us!

[@ProjectFarm]

thanks and you are welcome!

[@qdmax11]

Your the best man Thanks again! Love the work!

[@ProjectFarm]

Thanks and you are welcome!

[@khuff308h5]

Thank you. Nice video. Keep them coming

[@ProjectFarm]

Thanks, will do!

[@hightechredneck_0566]

I'VE BEEN WAITING FOR THIS FOREVER. THANK YOU!!!!!

[@ProjectFarm]

Sorry it's taken me so long and hope you enjoy the review!

[@hightechredneck_0566]

@@ProjectFarm I figured you'd get around to it eventually. Absolutely enjoyed it and already sharing.

[@da_647]

Love the oil tests. Probably my favorite of the channel!

[@ProjectFarm]

Thanks!

[@franknukemcomegetsome2744]

You are awesome thank you!!! Your tests are more scientific and more conclusive than anyone else!!!!👍😸

[@ProjectFarm]

Thanks!

[@kevin-n-darlenef301]

Great show PF!!!😊

[@ProjectFarm]

Thanks!

[@nathanmeade3463]

love the videos man i’ve been watching for years always look forward to the weekly post👍😁

[@ProjectFarm]

I appreciate that! That means a lot to me!

[@SarahJones-ik6jh]

You definitely deserve more recognition for this!

[@Bob-Sacamano]

piss off bot

[@thomaskibsgaard4692]

3.2 mill subs is quite the recognition :) But yes he is awsome. plus he very often responds to his viewers

[@ProjectFarm]

Thanks! Thanks for watching!

[@Bob-Sacamano]

This is a bot account reposting stolen comments

[@turdferguson1044]

As always, WELL DONE!!!!!

[@ProjectFarm]

Thanks!

[@MrPoppyDuck]

That was eye opening and interesting! Thanks for the great video!

[@ProjectFarm]

Thanks and you are welcome!

[@martintodd8219]

Very impressive test. Well worth watching. I drove a fuel transport for 20 years. The oil company I worked for sold many different types of engine oil. Including most of what was tested. We were a Schaffer oil distributor for 70 years. That was the oil we used in all our trucks. I watched a teardown of a Detroit 60 after 1 million miles. Very impressive results.

[@ProjectFarm]

Thanks! Thanks for sharing.

[@JonNo86]

Someone mentioned your channel on another video, so I decided to come take a look... This is exactly the type of content my ADHD/Autism needed. You have a new subscriber!

[@ProjectFarm]

Thanks for watching and subscribing!

[@iancattanach2285]

Love your videos, I’ve been watching for a long time and appreciate your in depth testing and simplification of describing the results! I’m not sure if I’m the only one asking about it but it would be awesome to see you test the 15w-40 motorcraft diesel oil, a lot of us powerstroke guys run that oil and it would be sweet to see it compared to the other oils, maybe prompt a switch!

[@ProjectFarm]

Thank you! Thanks for the suggestion.

[@kunkel3269]

BEST VIDEO YET!!! Thank you very much!!!

[@ProjectFarm]

Thanks and you are welcome!

[@rowmacg]

Thank you for this video, I was hoping you would do a comparison like this years ago! I had a 2018 RAM 5500, and put about 365,000 miles on it before I switched to a 2022 Kenworth. I tried the Shell Rotella T6, Schaeffers, Amsoil 6x Signature, and the Hot Shot Secret Blue Diamond oils. I send an oil sample to Blackstone every oil change. The Hot Shot Secret performs the best out of the oils I have tried in your test comparison. I figured all of this out with the RAM, I broke in the Kenworth with the Shell Rotella T6, while doing short oil change intervals during the first few thousand miles. Then I switched over to Hot Shot Secret after about 15,000 miles. Hot Shot Secret isn’t cheap, but the data from Blackstone shows it performs the best overall. Since my livelihood depends on my truck, I only want the best oil in my truck! I’m not surprised that Hot Shot Secret flows the best in cold temperatures, as both the RAM and Kenworth start right up and run smooth in below zero temperatures using that oil! Thank you again for this comparison, so many people will find this information very valuable!!!

[@nickjones8702]

@rowmacg I use hot shots as well could believe the difference when I made the switch . Only oil I use now in had my 2019 Mack Anthem go 500,000.miles no engine issues at all before I got the new truck and I unload with a PTO. But don’t remember my engine hours .2023 Mack MP7 Anthem .2011 GMC 5.3 1500 and wife’s 2011 Hyundai Sonata all hot use Hot Shots engine and Tranny Fulids

[@rowmacg]

Glad to hear you’re using Hot Shot Secret in your Mack with good results as well! The most noticeable difference in the Kenworth with the PX7, same block as the Cummins ISB 6.7, is the air compressor is only half as loud as it was with the factory Delo oil or Shell Rotella! The air compressor in these engines is quite loud, but the Hot Shot Secret has made not so embarrassing anymore lol. I noticed in the comments that so many people have been using some of these diesel oils in their gasoline engines, that’s something I don’t know much about? Personally I would be afraid to do that, but it’s just a matter of educating myself and experience. Anyway I just bought a 2024 Ford Maverick hybrid, and I bought Valvoline specialty hybrid oil just for it, since it’s formulated for the unique operating conditions of a hybrid engine. I’m looking forward to the first oil change on the Maverick!

[@nickjones8702]

@@rowmacgglad to know that it helps quite down the air compressor. Yes I use Hot Shots Blue Diamond 5w40 Diesel oil in my 2011 GMC 5.3L I just switched from there Euro 5w30 and 5w40 just because I wanted the extra additives that are Diesel Oils to help with the famous LIFTER Failures in the LS Engines For the years of the Active Fuel Management but calling placebo effect to me but makes me feel good I also use there gear oils and transmission fluid. I use Valvoline products in the pass with good success and is my backup oil or Chevron Delo Oils. But every once had there own choice it’s there money spend it how they want. Have a great one sir.

[@13polarbarr]

I run T6 in all my ram 2500's and have had great results. 3 trucks with over 700k miles and still going strong! I do ad 1 quart of Marvel and 1 quart of Lucas each oil change though.... Maybe I will try Amsoil to see what happens now. Thanks for everything you do!!!! So much unbiased info and entertaining to watch!!

[@ProjectFarm]

Thanks for sharing

[@Avies48]

Let us know how amsoil goes for u!! How does the lucas and marvel help out in the oil changes??

[@13polarbarr]

@Avies48 The Lucas helps with longevity of the oil, and the MMO I swear makes the oil temp a couple degrees cooler. My trucks tow from 3k lbs to 16k lbs constantly, and still run perfect!

[@matthewprice5749]

Thank you so much for all of your hard work and honest tests. I bought a new vacuum this week based on your data. Would love to see you test grill thermometers!

[@ProjectFarm]

Thanks! Thanks for the suggestion.

[@HotRod-wv4vm]

Thanks for the review

[@ProjectFarm]

You are welcome!

[@snidelywhiplash285]

I know Delvac didn't finish all that well against the other brands, but I've had really good luck with it. Been driving a truck for 25+ years and have used nothing but Mobil Delvac. Never had an oil related failure.

[@ProjectFarm]

Thanks for the feedback.

[@erickborling1302]

Seems reasonable that all popular brands would be reliable and that the comparison is... "splitting hairs" as they say.

[@user-ek5nl1jc4b]

That just means regular maintenance will benefit you no matter what oil you use. Using better oil will ultimately do even better and most likely give you more engine life long term. I personally use amsoil in everything, it is a little pricey but I have seen proof personally that it performs better.

[@davidcaprio8919]

It's Dino oil, not Delvac1

[@davidcaprio8919]

Delvac1 may have been a better comparison...

[@scottsencounters]

Love your content as always!

[@ProjectFarm]

I appreciate that!

[@scottsencounters]

@@ProjectFarmI have been subscribed to you for a number of years. I love all the comparisons you do.

[@TheKingc20]

Awesome video!

[@johnbentzinger2578]

I've used Schaeffer Diesel motor oil for many years and have been very impressed.

[@ProjectFarm]

Thanks for sharing.

[@earlrichardson385]

I know a lot of guys with older muscle cars and they love running the diesel oils. I will make sure they see this video. 👍

[@ProjectFarm]

Thank you!

[@keepthemgold1]

Rotella T6 is what goes in my truck. I actually use it in my big block boat engine too. Glad to see it did well.

[@ProjectFarm]

Thank you for the feedback!

[@dansamerica]

What big block? 350 or the 8.1 496?

[@coyotedes6886]

Thank you, This is very good information. I started using mobil for my last few oil changes but now I I’m gonna go back with rotella

[@ProjectFarm]

Thanks and you are welcome! Thanks for the feedback.

[@NiallJones-j3s]

Love the channel. Would love to see one testing how much of a difference is there using the more expensive impact socket

[@ProjectFarm]

Thanks! Thanks for the suggestion.

[@Mis73rRand0m]

Good to see none of these products were outright failures; the Mobil might leave something to be desired but would probably perform just fine in normal duty operations. Rotella looks like my all-around choice (it already was my recommendation before), while Amsoil seems the best for extreme duty/high heat environments.

[@ProjectFarm]

Thank you for the feedback!

[@farming4g]

I think really any of these oils will work great... if going with the Mobile just might have to change oil a little sooner with the smaller additive package in it. Have used Mobile quite a bit in the past and has worked great.

[@M4ttM4n20]

I've recently switched to Rotella T4 for my motorcycles. I've used T6 for over a decade in my bikes. I just put in T4 in my XR150L. It is running very well. I am very impressed. $16 a gallon. I have 13 years/580k+ miles of experience. Most of those miles were done with Rotella T6 in the motorcycles I was riding.

[@ProjectFarm]

Thanks for sharing!

[@jeanpaulcomeau8131]

Excellent as usual. Thank you for your time Hi from Malaysia

[@ProjectFarm]

Thanks and you are welcome!

[@trentlebeau8560]

Great info! Thank you.

[@ProjectFarm]

Thanks and you are welcome!

[@challenger2ultralightadventure]

I use Rotella T6 in my diesel truck. Your testing showed to not be the best, but it also showed it to be very good and affordable. Good enough for me.

[@ProjectFarm]

Thanks for the feedback.

[@philliphall5198]

I agree it’s how often you change it that matters the most 😊😊😊

[@GT-mn3bx]

​@@ProjectFarmDo this again and add a Warren product like Kirkland Conventional 15w40 or Lubrigard(warren) Full Synth 5w40. Both are by far the cheapest priced. We have 100 10 wheel dumps running Lubrigard, both conventional and Synth depending on the season.

[@Daemione]

Hearing the coveted "Very impressive!" commendation from you on your favored brand is one of the best feelings.

[@ProjectFarm]

Thanks!

[@felixlaboy1453]

Your best. Keep up the amazing work

[@ProjectFarm]

Thanks, will do!

[@jhpfmj]

Very informative as always thank you sir

[@ProjectFarm]

Thanks and you are welcome!

[@paulfay357]

As an independent mobile heavy equipment mechanic, my 2014 power stroke service truck has over 300,000 miles, with thousands of extra hours of idle time on it. I change oil every 30 days regardless of mileage and fuel filters every other oil change. I use conventional Rotella T4 15W40. Because of the grotesque torture I put my truck through on nasty job sites, my theory is that more frequent oil changes with cheap oil is less damaging than extended oil change intervals with expensive oil, and I've got the high mileage truck to verify that. If you use your diesel intermittently, or run it in dirty environments, or put on tons of idle time, your oil is going to be contaminated with some combination of soot, water, fuel and dirt. Under those circumstances, your engine is not going to care how much you spent on the oil...you have to change it, often. If on the other hand, your running your truck as a hotshot, with tens of thousands of freeway miles every year, you should get the best oil that money can buy and extend that interval out as far as you can. It really all depends on what you're doing with your diesel, in my opinion. Incidentally, if you bought a diesel truck to commute 20 minutes to work and back, haul a bag of groceries on the weekend, and tow your camper once a year, sell it. You don't have any business owning a diesel truck. 🤣🤣🤣

[@fredwilliams7893]

I don't tow jack with my 17 chevy duramax! I just wanted to own a truck that has a better resale value if I decide to sell than a half ton gasser and wanted a truck that would last twice as long as a half ton gasser ! My money my investment! Arrogant tow douches should stop wasting there cry baby opions on guys who don't tow! Our money our problems not yours!

[@ProjectFarm]

Thanks for the feedback.

[@CiGambino]

This seems like solid advice. I dont own a diesel, but I have a few rules for how I run my car that are similar.

[@SirPhilMcCrackinVonBeggington]

I'm not really following your logic, especially since you claim you're a mechanic and should have a better understanding of stress put on an engine. You claim that freeway haulers should invest in full synthetic? Freeway miles are proven to be the least demanding on an engine. If you need proof of that, just look at the difference between freeway fuel efficiency vs. surface street fuel efficiency. It makes more sense for highway cruisers to use conventional given the lack of stress from freeway miles. The "torture" you put yours through of idling and driving to an from and around job sites would be much much more logical application of synthetic oil, because despite your claim, your engine will absolutely perform better AND you will definitely have a higher degree of protection with a synthetic oil in a higher stress operating environment. Rotella T6 current price is an extra $6 per gallon (on Amazon anyway) which is something like an extra $24 per oil change (assuming your power stroke has a 15 qt. capacity). Further more it's a business expense for you, so it's tax deductible. All of that said, given your application there is absolutely no reason you should be cheaping out on oil for your truck.

[@paulfay357]

@@SirPhilMcCrackinVonBeggington Don't disagree with a single thing you said, however, I think you may have missed the point. The kind of operating I do literally contaminates oil very quickly. I do super frequent oil changes to keep that contamination out of my engine. If I were rich, and cost were no factor, of course I'd put something much more expensive in there. Bottom line is this. Clean, cheap oil protects better than contaminated expensive oil. I've owned 3 separate Power stroke trucks over the last several years and got the same results every time. No engine repairs needed...at all.

[@aaronthedj12]

I knew a guy who owned an oil testing facility. He ran Amsoil in a long distance highway, semi truck. The oil was still within safe specs after 226,000 km / 140,000 miles. He was amazed. He also noted, shell oils shear and wear faster than most other oils. I always enjoyed speaking to him about different oils. Thanks for posting this PF!!

[@ChinookBear]

With a bypass filter, Amsoil can withstand incredible mileage.

[@user-vx7vi3vq1c]

1999 Toyota 4Runner. 513,000 miles on Mobil 1 with a 10,000 oil change interval.

[@sasquatchcrew]

In my experience with 30,000 total accumulated miles on shell/penzoil plat/ultra I would agree. The oil also burns/oxidizes significantly more than average. Castrol/RP have good oxidation resistance, but lack in film strength.

[@snizami]

It's the duty cycles that really do the most damage. An engine running steady for thousands and thousands of mile non-stop will do far better than one that does thousands of short individual trips.

[@m3rk201]

At fedex freight we use rotella shell products. Our fleet engines have zero engine failures. These cumming engines run 24/6 days week. Emission devices that's entire different issue lol..

[@Zerzil1974]

I have been looking forward to this video for a while!! Always nice to see alternatives - since Rotella T6 is on sale this week for $59.99 (down from $71.99)

[@ProjectFarm]

Thanks for sharing.

[@Chris-gi6mi]

Excellent video, sir. I've personally always run Rotella in my diesel engines. Regardless, this definitely helps people to identify which oil will perform the best for their individual needs. Again, well done sir.

[@ProjectFarm]

Thanks!

[@CapablePimento]

Would love to see T6 against motorcycle oils. See how bad ive been screwing up my engines.

[@ProjectFarm]

Thanks for the suggestion.

[@jeladsnikpoh1289]

Your not screwing up your engine with T6, as long as you're changing it when you should! It meets the motorcycle wet clutch certification, and it's good oil for a fraction of the cost of Yama/Honda/Kawi oil. I know it's not quite the same, but there's truckers with 2million miles that swear by the stuff. I don't recommend you go cheaper (like T4/T5) as they're not full-synthetic like T6.