TURBO STAR 15W-40 is a multigrade motor oil for diesel and gasoline engines. The viscosity range SAE 15W-40 ensures throughout the year reliable cold starting and high temperature resistance even under extreme conditions. Shear-stable materials ensure compliance with the viscosity range SAE 15W-40. The combination of selected base oils and additives effected very good wear protection and excellent engine cleanliness, the formation of black sludge is prevented.