

Schaeffer Manufacturing Co. 0700CK4-012 SynShield Durability Advantage 15W-40 Diesel Engine Oil, 12-Quart Bottle (Pack of 12)
-
Dr. Jay Schmeler Jr.
> 3 dayexcellent
-
Justin
> 3 dayI can’t say enough about this Diesel engine oil. Best stuff on the market.
-
SupraRR
> 3 dayIts green
-
Andrey
> 3 dayGood oil.Had it before, but dropped after ingine start eating oil.Since bouthg different semi start using again.
-
Chad Gillespie
> 3 dayCase leaking oil when it arrived
-
Clark Kent
> 3 dayGreat product as always from Schaeffers
-
paul d
> 3 dayGood
-
Hollywood
> 3 dayThis stuff is in fact.. the cats MEOW!! I would only recommend this formula for cooler climates before running it myself, but it in fact holds its own in severe heat as well! It holds slightly more oil pressure than Rotella 10W-40 at the same temperature! I’m pleased! I’m running this in everything I own now!
-
Jeremy R.
> 3 dayI have a 2008 6.4 Powerstroke its some of the best oil that Ive ever used when I started using chafers Ive had the cleanest filters Ive had since Ive owned the truck I highly recommend this to anybody.
-
Randy Reynolds
03-06-2025Good product from a reputable company