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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.
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.
Royal Purple motor oil is compatible with synthetic and conventional motor oils.
Enhanced additive technology prevents metal-to-metal contact beyond both dexos1 and ILSAC GF-5 specs. A low coefficient of friction results in optimized fuel efficiency (the fuel economy of our 5W-30 meets the fuel economy requirements of a 5W-20 oil). And patented ZDDP additives optimize emissions catalyst system life.
Additionally, patented additive technology prevents the white sludge and lubrication starvation that can occur with 20% or higher ethanol fuel. No rust has been observed in standard industry testing.