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

Use this oil in my 2010 Chevrolet diesel and change my oil every 10,000 miles. Great oil

Its the best. Love Schaeffers oil

Noticed mpg improvement. Cant beat moly.

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.

excellent

After 2 hours run time its still clean.

Not very impressed so far. The oil has 3000 miles on it and the 7.3 was filled slightly over the top line on the dipstick before leaving for a 300 mile trip. My truck is ridiculously maintained and has never burned oil in its 240,000 mile life. Pulled into camp, parked and all was good. Next morning it would not fire up! Checked the oil level and was a little below 3/4, added a gallon of delo and it fired up of course after getting oil up to proper levels. In case you dont know, low oil and your injectors wont fire with ford 6.0 and 7.3, awesome system as you wont ever ruin an engine due to low oil. Obviously I do have an issue possibly with a low pressure oil pump but the oil should not burn off like this. No signs, smoke or running problems indicating an issue on the drive. Im disappointed especially after reading all the reviews on the forums over the years and finally getting to try this oil. It ran just slightly better than my regular oil for a few months and then now it runs rough like the oil is old just over 3000 miles. Will not be buying again and am sticking to locally bought oil

Love this oil. Great quality

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?

The best oil money can buy!!