Mobil 1 Racing oils employ fully synthetic, latest generation, wide viscosity grade racing oil technology, designed to help reduce engine friction and protect the engine under high output conditions in high operating temperatures. Both Mobil 1 Racing 0W‐30 and Mobil 1 Racing 0W‐50 motor oils offer boosted levels of anti‐wear protection (nominal zinc level of 1,850 ppm) for extra engine protection in highly loaded flat tappet engine designs. Mobil 1 Racing oils are not recommended for street use.