Lucas Synthetic 5W-20 Junior Dragster Oil is a 100% Synthetic, ULTRA-light viscosity, RACING MOTOR OIL. Developed for high RPM naturally aspirated gasoline engines, it is excellent for gapless or extra light tension rings. Has great methanol tolerance. Provides maximum horsepower gains in Junior Dragster and Quarter Midgets, while providing excellent protection and reducing friction at high RPM?s. Our exclusive Anti-Wear and Anti-Scuff Extreme Pressure additive package protects the valve train, bearings and cylinder walls. Designed to run at operating temperatures up to 190?F, although it will provide protection up to 250?F. Heavily fortified with zinc to provide maximum protection. Not intended for passenger car use.