WEBLUBE SAE 20W50 CF-4 are formulated for heavy duty diesel engines and it's blended from high quality base oils and a specially selected additive package to meet API CF-4/SG requirements. The product is formulated specially with ashless dispersants and metallic detergents to provide strong oxidation stability to withstand oil degradation due to engine heat. The metallic detergents are added to clean engine parts for reduced wear and the high product alkalinity is to neutralize the acidic products formed during combustion. Applications For Mixed fleets of both diesel and gasoline Engines & Diesel engine fishing boats, river boats and ferries, agriculture tractors.