Royal Purple’s API-licensed Motor Oil combines premium base oils with proprietary additive technologies to create high performance motor oils that optimize engine performance. Royal Purple’s API-licensed motor oil delivers superior protection and improves performance in gasoline and diesel engines. Royal Purple API-licensed oils meet warranty requirements of most passenger car and light trucks sold in the U.S./North America. Royal Purple motor oil is compatible with synthetic and conventional motor oils.
No special procedures are necessary when upgrading to Royal Purple. Royal Purple recommends waiting until the manufacturer’s first scheduled oil change in new gasoline and diesel engines before upgrading to Royal Purple.