Shell RotellaShell Rotella T6 Full Synthetic 5W-40 Motor Oil, 1 Gallon (3 Pack)

There's not enough time in the day to explain used oil analyses or what the 5W and 40 mean. I can tell you that this has higher anti-wear additives than all the other oils you've been using. It even rejuvenates seals. I use this over "High Mileage" motor oil all the time. This rejuvenates my seals, reduces consumption, takes a BEATING, lasts a very long time, is always priced extremely well, made by Shell (whom also makes Pennzoil) and yeah.. I've ran this in cars for decades.It's worth trying. Research UOAs and see for yourself. I've seen better wear results from this than Mobil1, Pennzoil Platinum, etc. I won't name every brand, but it's got more additives because it's not pressured to keep the cats clean.News flash, if your cats are failing, it's not the oil's fault lol.

Good stuff!

Great oil at a fair price,I have used it for many years in my F350 starts good in the cold,I change every 5K. I also use in all my small motors too, mowers, generator,4 wheeler and motorcycle

In my opinion this is the best oil ever made for use in diesel engines. Used it in my 60 series Detroit, when I sold the truck it had 1,278,000 miles on it and still running strong. I now use it in my RAM 3500 with a Cummins engine.

This was a good price shipping was fast to be honest. I ordered it on Amazon because I was too lazy to go to the store. I needed to do an oil change on my truck over the weekend and do not like shopping so I had it shipped. It works as advertised.

Great oil always used in my diesel and older cars and never had an issue.

We use this in all our marine inboard engines. Couldn't be happier with the performance.

Good oil 15/40 T6, no foil seal and small amount of leakage. Also cap wasn't very tight, almost loose.