Shell Rotella T6 Full Synthetic 15W-40 Diesel Engine Oil, 1 Gallon

Really good deal on this oil. I use it in everything diesel

Quality oil

First delivery, the bottle cap had been cracked from mishandling I assume, and it leaked everywhere. I don't understand why they deliver something so messy. They left it on my stoop so the oil could leak on my new 20 thousand dollar 2 story paver stoop. So thank you for that Amazon delivery guy for ruining the finish of my pavers. We're going to have to replace the top pavers. I'm unbelievably annoyed by this. Amazon did replace the oil, so I'll only be out like 2000 dollars I guess. But back to the oil. This is the only oil that my 1987 Mercedes 300D will run on properly without lifter clatter. I recommend it to anyone who has an old diesel. My engine purrs like it's brand new.

Unopened box arrived in perfect condition. I use this in my motorcycles because it has the correct additives for a wet clutch, and also for my diesel truck. It has worked great, and I would highly recommend it. You can fudge a bit on oil weight depending on the climate you live in. Old motorcycle manuals used to have a chart for what oil weight you should use at what temperature, but most newer motorcycle manuals don't have that. If your bike calls for 10w-40, then 15w-40 is probably fine too unless you're starting it in very cold conditions. (Not legal advise) I got this for $65 for a 3 pack of 1 gallon jugs of 15w-40 in Feb 2026, but it looks like the price fluctuates a lot.

Great and proven oil! And price is better then parts stores. However when shipped the lids were not completely tighted causing to leak in box.

Idk what else can be said it’s a great oil, except in December of 2025 I purchased 3 gallons for $66.95, it’s now showing like $115.00. That’s just crazy to me.

Good stuff. Too bad Amazon half the time refunds my money because either them or the post office decides to destroy the bottle getting oil all over it and anything else I also ordered with it. I recommend ordering it separately just in case unless you like the hassle of many refunds. Still worth it. You can’t beat the price here.

Excellent!! If you buy oil get it from this vendor! 10/10 👍🏼👍🏼

The only oil i'll use in my L5P Duramax.

Super oil for my motorcycles!

This product is rated for high pressure in transmissions and clutches running in the engine oil also. It is rated JASO MA which is what is called for in a lot of Japanese bikes and cheaper than the dealer supplied oils that have the same rating.

Has better oil pressure and it stays clean for a long time It’s in a CaseIH Mx 230 farm tractor 8.3 litre communes

This is one of the most popular diesel engine oil’s available.I pretty much use this in my diesel Passat and Benz E320 Bluetec as well as my GM trucks.Rotella T has always proven itself as a leader.