Schaeffer Manufacturing Co. 0700CK4-012 SynShield Durability Advantage 15W-40 Diesel Engine Oil, 12-Quart Bottle (Pack of 12)

Top of the line oil no doubt but, it’s advertised as 5 gallons but only contained 4.5 gallons. Where are the other 2qts I paid for?

After 2 hours run time its still clean.

Noticed mpg improvement. Cant beat moly.

Best oil on the market. Its costly but worth it to keep your motor lubed and clean. This has revived my old 01’ Dodge Ram 2500 Cummins.

Im running this in my 17 F250 6.7, all previous oil changes were T6. Schaeffers is supposed to be far more premium but honestly I think the Ford 6.7 runs better on Rotella. It seems to run louder on Schaeffers and this oil meets Fords specs. I bought Schaeffers because it was on sale here on Amazon for $6 a gallon less then T6, and because I was intrigued to try it. I also noticed that I get a hair better fuel economy with Rotella but its so small maybe its not worth mentioning. Im going to give Schaeffers a little more time since I bought enough for 3 oil changes, but Im feeling in my gut T6 will probably be the winner after Ive gone through all the Schaeffers.

Best oil for Ford 6.7 Powerstroke, hands down.

Used it for years in my gm crate works great

All good

Very expensive,I am dissatisfied ,my motor is now louder than it was before, especially when cold.I just dont see me using and pay in extra in the future for this product

One thing to point out this OTR 10W-30 is (0711CK4-006S) - which is a Semi-Synthetic... The (9012) OTR 10W-30 - (09012CK4-006S) is the 100% Full Synthetic - similar to the formulation of their 9000 5W-40 Full synthetic... I did not realize this until now - I spent 30min looking over Schaeffers website & finally found 2 types of OTR 10W-30... Just wanted to point this out - so buyers who prefer a 100% Full Synthetic was not mislead...