Shell RotellaShell Rotella T6 Full Synthetic 15W-40 Diesel Engine Oil, 1 Gallon

I’ve been using Shell Rotella T6 Full Synthetic 15W-40 exclusively in my Duramax diesel truck, and I couldn’t be happier with the performance. This oil is built tough, just like my engine needs.Here’s why I stick with Rotella T6:Full Synthetic 15W-40: Perfect viscosity that protects my engine from cold starts and high-heat operation.API CK-4 and CJ-4 Approved: Meets the latest diesel engine protection standards for reduced wear, deposits, and oil consumption.Enhanced Shear Stability: Keeps the oil film strong under heavy loads and high temperatures.Advanced Additive Technology: Helps fight soot, sludge, and corrosion—critical for a diesel engine’s longevity.Excellent Wear Protection: My Duramax runs smooth and quiet, even towing heavy loads.Using Rotella T6 gives me peace of mind that my truck’s engine stays clean and protected mile after mile. If you drive a diesel and want dependable, top-tier synthetic oil, this is the one.

This is a great quality product at an excellent price!!!!

This is the only oil I use, and the only oil I plan to use in the future. As far as I'm concerned it's the best there is.

In my opinion, Shell Rotella 5w-40 is the best oil performance and price wise for any heavy duty diesel truck. I use this in both my 2004 Ram 3500 with a 5.9 Cummins and in my 2015 F250 with the 6.7 Powerstroke. This oil and a good filter keeps my engines running like a champ. I live in West Texas where summers get ridiculously hot but it can get cold in the winter. The 5w-40 works great in both conditions and I’ve never had issues with cold starting either of my trucks unplugged.

The price beat our local warehouse store and it was shipped straight to my house.

Great product! Have used it in my ram 2500 diesel for years. Caps may be loose from the factory.

I've put lots of miles on three different diesel trucks using Shella Rotella T-6 and I've never had an oil related issue. I have sent this oil to Blackstone laboratories in the past and it always comes back within specs all the way up to the 15k mile mark. The price is decent. If isn't broke, I'm not going to change.

I use Rotella T6 in all my engines, both gas and diesel as well as my farm tractors. For me, T6 is the ultimate lubrication. Having said that. this pail is white, not the usual blue and it leaked just a tad in transit. Not a deal breaker as the per pail price is excellent and I will purchase it again, just like I have in the past.Rotella in the 5-40 viscosity insures easy cold weather starts and performs excellent in hot weather as well.