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

Great oil

2008 ford 350 6.4

Dont buy

Put this in my 2005 6.0, she loves it. Definitely a different truck

Love this oil Only oil I will run in my truck from now on Starts up better and runs quieter

Its green

The best oil money can buy!!

Good oil at a great price, well worth the investment as I plan on driving the tires off this thing. I was previously running Castrol Full Syn and switch. My idle oil pressure is now 10 PSI higher. I tested this on a brand new oil pump and used Castrol after replacement. Used Sheaffer on the next oil change and I am happy to see the oil pressure running hire..

Good oil.Had it before, but dropped after ingine start eating oil.Since bouthg different semi start using again.

Its the best. Love Schaeffers oil