Mobil 1 ESP x4 0W-40 is a fully synthetic engine oil that is designed to provide effective protection against wear, keep the engine clean and contribute to good performance over a long period of time. The oil is based on modern technology developed through the long-term cooperation between Mobil and Porsche. The formula is also adapted for modern gasoline and diesel engines and helps to preserve the function and lifespan of the vehicle's exhaust gas purification system. It is also suitable for engines equipped with diesel particulate filters (DPF) or gasoline particulate filters (GPF).