Shell, Rotella T, 2.5 Gallon, 15W40, CJ4, Multi Grade, Heavy Duty Motor Oil, SAE, With Advanced Soot Control, High Quality, Mixed Fleet, Meets The Warranty & Service Requirements Of Virtually All Diesel & Gasoline Engine Manufacturers That Recommend A Multi Grade Oil, Recommended Especially For All On Highway Service Applications, May Also Be Recommended For Off Highway Applications, Especially Where All Season Use Is Desired, Exceeds The Requirements Of Both Cleaner Burning New Engines & Earlier Models, Helps Ensure That The Oil Stays In Grade In All Seasons & Under All Types Of Loads.