DI50 SAE 15W-50 Synthetic Racing and High Performance Motor oil for Direct Injection Engines For factory high performance stock applications and Track Day use also consider Driven HP-X 5W-50 and Euro Supercar 5W-50 DI-50 Features reduced Calcium and Sodium detergents and increased levels of molybdenum for reduced abnormal combustion events, DI50 is recommended for racing and other extreme applications. Viscosity typical of 15W-50. DRIVEN DI Series Racing Oils are formulated for High-Performance Engines and Racing Applications Only . This engine oil WILL NOT MEET any current API or OEM Engine Oil Specifications because it contains higher levels of ZDDP, Moly, and superior base oils along with high-performance viscosity index improvers —far beyond typical formulations.