I have been using this oil since I bought my Ram diesel. I work great with the 5 40 it will protect even in near zero weather, and covers the high end also with the 40 weight end. Great oil for any diesel engine out there.

I use Rotella T6 in everything. Currently running in my John Deere 180 with a Kawasaki motor, Kubota BX2370 tractor, Ford Explorer 4x4 mud truck, Chevrolet 5.3, and even a 2017 Subaru Legacy! Can't beat the performance.

Wonderful Oil. I use it in my 2005 Subaru STI. I change the oil every 3700k miles. The techs at the shop always my oil still looks like its in great shape!

I have used this in my 2014 Ram Cummins Diesel for the last five years. It gives me faster starts in cold weather, and gives no problems. What else could you ask for? Great oil in any engine that requires diesel oil.

Used in my Ram Eco diesel pickup, excellent oil meets all the manufactures specs. Wal*Mart's exceptional price prompted me to buy extra for next oil change.

Great oil, makes the diesels run a little quieter and can extend oil change interval. Saves money and engine is better protected. Easy choice to have it delivered to your door in cases of three

This stuff is excellent. I add this to all my vehicles, my Escalade, X5, Q7, Explorer, Silverado... on my German cars I add Ceratec. Per oil analysis, it does excellent.

I've been using this Rotella in my caterpillar engine, it has outstanding some other products and help me with cost, since I don't have to change oil as often.

I USE THIS IN MY 2000 CATERPILLAR 6NZ, AVG ABOUT 5.9 MPG. I ALSO USE THIS IN MY FORD 6.0 POWER STROKE, MY HONDA VTX 1800 STREET BIKE AND KAWASAKI BRUTE FORCE 750 SINCE IT HAS THE JSOMA RATING.

Quite a good price for a full synthetic motor. The 5W-40 works well throughout the winters here in Washington. It seems have a good following at many of the diesel forums, and my Ford 6.0 diesel keeps piling up the miles while running on it.