Is Royal Purple synthetic motor oil?

How many miles can I go between oil changes in vehicles that use diesel engine oil?
August 17, 2018
Will synthetic oil cause my engine to leak or consume more oil?
August 17, 2018

Yes. Royal Purple Motor Oils are composed of a proprietary formulation of synthetic base oils and synthetic additives containing iso-paraffinic diluents.Royal Purple Break-in oil is the only non-synthetic automotive engine oil offered by Royal Purple.