We blend VP Traditional Non-Synthetic SAE 50 Racing Oil with heavy viscosity base oils. These oils provide superior film strength, wettability, and protection for excessive blow-by into the oil. We also blend our SAE 50 with enhanced levels of ZDDP (zinc/phosphorous), which gives added wear protection to flat tappet/roller cams, and we include an additive that reduces friction. Furthermore, our Traditional Non-Synthetic Racing Oil features a strong detergent dispersant package and anti-foam control. We design our 50 weight oil for use in high-performance, highly stressed engines. This includes drag racing, racing, and tractor pulling, for instance. We recommend our product for gasoline, diesel, or nitromethane applications that call for an SAE 50 non-synthetic racing oil. Do NOT mix oil additive supplements with this product.