Maximizes power and improves performance in all two-cycle and four-cycle gasoline engines. Reduces engine knock, improves ignition and engine response, helps fuel burn cleaner, and inhibits corrosion. Recommended for off-road and racing use. Excellent as a lead substitute at the same treat rates in collector automobiles, older off-road equipment, and pleasure vehicles. The usual treat rate is one 12oz. bottle to 15 gallons of gasoline.