Valvoline Inc. the leading American supplier of HD engine oils, hydraulic oils, gear oils, greases, and antifreeze. Trusted for 150 years! From the 1st high mileage to the 1st synthetic blend with the only one endorsed by Cummins! The only motor oil with a dedicated Engine Lab where we test and prove our products. America's first motor oil brand. American owned and operated, Headquartered in Lexington, KY.