Royal Purple's vivid motor oil doesn't just promise ... and Approval Committee (ILSAC), and General Motors (GM) dexos1 Gen 3 approvals, so your car's warranties should stay intact.

Calumet retained ownership of the Porter, Texas, manufacturing site and the consumer portion of the Royal Purple® business, which caters to a diverse array of automotive product applications ...

Key brands within the consumer portion of Royal Purple include ... with the goal of covering Wall Street for a new generation of investors, RTTNews has expanded steadily over the years to become ...