It's blended with genuine Pennsylvania Grade base oil, It is compatible with Methanol, E85, and high octane race fuel, This oil achieves a higher Pressure-Viscosity Coefficient for excellent HTHS film thickness, Engineered to deliver maximum engine protection by utilizing Driven’s High Zinc (ZDDP) additive technology, Specifically designed for competition vehicles, classic cars, and imports with high-performance engines requiring a 20W-50 viscosity.