GP PETROGEN FULLY SYNTHETIC PAO 5W40 SNCF multi-grade motor oils are super quality, all season high performance products formulated from high quality synthetic base fluids and high speed circuit proven additives technology meeting and exceeding API & SAE specifications cited herein. It is a highly shear stable automotive crankcase oil formulated for use in gasoline powered cars, vans and light trucks of almost all makes. It provides excellent control over engine wear and sludge buildup and protects against rust and corrosion.