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

I 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.

This is a good oil, but it is very expensive for the value. Lucas Oil 10299 SAE 15W-40 CJ-4 Synthetic Motor Oil works just as good for half the cost. Schaeffer oil is good but not worth the extra cost.

excellent

For Hubbys stuff..

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

Excellent quality oil. I use this in an old 3800 GM v6 and it works quite well. Although not fully synthetic, if you do your research, this is much better than even full synthetic Castrol. Pour point, viscosity index, and flashpoint are very impressive. Moly enhancement really works, probably better than Royal Purple which is another moly enhanced oil.

I tried this due to not being able to find Rottela T5 in the stores. For me this will be a permanent switch. My 6.0 starts easier runs quieter and seems to get a little better fuel milage.

Excellent oil, I used this in my 2015 f250 diesel, and the engine oil runs 8 degrees cooler than it did before. First time I actually seen a difference in an oil like this, really lived up to its name ,will buy it again.

Great oil, can go way longer now on oil changes. Saves money on maintance. And motor runs so smooth.

I like that oil very much,(addicted to it) tried this oil in different cars, works perfect Ram 3500 Cummins 6.7, towing Goosneck, got 20000 miles of oil change. Mersedes ML350 Bluetec 15000 of oil changes, analyzing oil after 30 to 52 % life left.