Proven to handle 500 miles of competition at over 9500 RPM, XP1 utilizes multiple synthetic base oils for increased durability under higher loads. Formulated with proprietary anti-wear and friction reducing additives to fight valve train wear and increase horsepower. Ideal for high RPM and high output engines with tight clearances. Perfect track car oil for naturally aspirated Honda, Scion and Subaru engines. Ideal for Briggs & Stratton Animal and Flathead engines running Methanol. Also great for V-Twin style racing engines. Compatible with methanol and high octane race fuels. Viscosity typical of 5W-20.