Our suggestion for modern performance engines, such as LS, Coyote, Hemi, ect., is AMSOIL XL Synthetic Motor Oil's boosted formulation. It's packed with extra engine protection delivering extra cleaning power, outstanding wear control, excellent high- and low-temperature protection, and exceptional fuel economy. XL is engineered for advanced automotive technology, including turbos and direct injection. 5w-30 is recomended for most of the engines mentioned above.