GENCORE 15W-40 CK-4 Heavy Duty Diesel Engine Oil
CK-4 certified heavy duty diesel engine oil with WS₂/MoS₂/hBN composite technology. 3-5% fuel savings documented in fleet testing.
CK-4 certified heavy duty diesel engine oil with WS₂/MoS₂/hBN composite technology. 3-5% fuel savings documented in fleet testing.