4T 10W-50 SYNTHETIC OIL - 9779235Part Number: 9779235 Engineered for heavy duty and high performance 4 stroke engines, including turbocharged, supercharged and racing engines. Formulated using carrefully selected and strenuously tested base stocks and custom additives. Offers thick film strength to protect bearings, and a proven high temp detergency to minimize deposits, prevent shear, provide thermal stability, and combat fuel dilution to ensure maximum performance from your engine.