4 Stroke Karting (KRT) Formulated with select synthetic base oils for increased horsepower and durability at high temperatures. Utilizes proprietary anti-wear and friction reducing additives to fight valve train wear and increase horsepower. Compatible with methanol and high octane race fuels. Ideal for Clone, Flathead and Honda engines. Proven to increase horsepower up to .4 in Clone engines, and KRT reduces cam and lifter wear in Flathead engines. Viscosity typical of 0W-20.