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

I’ve been running Rotella in my personal and fleet trucks for quite some time now. Just got delivery of my new Ram 3500 limited(comes from factory with T5 rotella)…or so I’m told. Fast forward 2 weeks I put 2k miles on her and that’s right around the time I do my first oil change on all my diesels. I decided to grab this stuff on a recommendation from a good friend, didn’t expect nothin much of it as a difference from rotella. Boy oh boy was I wrong. Right after driving off from said oil change I could easily feel and hear the engine performing differently in a good way obviously, fast forward a few days and I went from 13.4 mpg to almost 16. Did not change a dam thing other than oil. Still driving the same if not faster. From now on all my trucks are running this oil.

Nice oil