Fleets
A test vs. two leading brands.
After 500,000 miles, EcoPower HD 15W-40 CJ-4/SM was as good or better than two leading premium HD oils made from crude.
A test over 1,000,000 miles.
After 1,000,000 miles with drain intervals at over 40,000 miles, EcoPower HD 15W-40 CJ-4/SM delivered exceptional engine protection.
