HARVEST KING ALL-FLEET ENGINE OIL SAE 15W-40 CK-4/SN -is formulated for use in High-Speed four-stroke cycle diesel engines designed to meet 2017 model year on-highway and Tier 4 non-road exhaust emission standards as well as for previous model year diesel engines. This oil is formulated for use in all applications with diesel fuels ranging in sulfur content up to 500 ppm. | Harvest King All Fleet SAE 15W-40 HD Engine Oil | Size 2 gal