Dexos R ushers in a new motor-oil standard for high-performance engines 2 min read Articles Signature Series Dexos R ushers in a new motor-oil standard for high-performance engines Tisha Maguire March 22, 2023 GM dexos R Raises the Motor-Oil Bar for High-Performance Engines AMSOIL Signature Series already outperforms the new motor...Read More