ValvolineTM Premium BlueTM Heavy Duty Engine Oil delivers superior protection for hardworking trucks and equipment. The proprietary One Solution Technology is designed for heavy duty diesel, gas or natural gas engines in both on road and off highway applications. The engine oil is the "The Only One"TM endorsed and recommended by Cummins and features exceptional oxidation resistance, outstanding wear protection and superior deposit performance compared to industry requirements. ValvolineTM Premium BlueTM Heavy Duty Engine Oil, How the Tough Get Going.TM