Description Product OverviewHarvest King All Fleet SAE 15W-40 HD Engine Oil 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 suitable for use in all applications with diesel fuels ranging in sulfur content up to 500 ppm.Key BenefitsProtects emission control systems.Outstanding oxidation stability.Excellent low temperature properties that help speed cold starts.Universal product for mixed fleet operations.