3704-400 ENEOS 5W-40 Fully Synthetic Motor Oil formulated with high-quality base oils and an optimized additive blend. ENEOS 5W-40 is for automobiles with factory recommended viscosity of 5W-40. It is a high-performance engine oil used in gasoline and diesel engines that meets the American Petroleum Institute (API) standard SN/CF. ENEOS 5W-40 meets the European Automobile Manufacturers Association (ACEA) C3, as well as MB229.31 & 229.51, VW 50500 / 50501, BMW LL-04, and Porsche A40. Also Compatible with Diesel Engines. ENEOS 5W-40 also meets the API CF standard. It is an excellent high performance oil for small passenger diesel engines.