Specially designed for competition vehicles, classic cars, and imports with high-performance engines requiring a 15W-40 viscosity, It is compatible with Methanol, E85, and high octane race fuels, They are blended with genuine Pennsylvania Grade base oil, and achieves a higher Pressure-Viscosity Coefficient for excellent HTHS film thickness, Oil requires no additional ZDDP additives, Ideal for street-track performance vehicles with either flat tappet, roller, or overhead cam engines.