and its decision to add a purple dye to the oil definitely made the product seem more unique when compared to other engine lubricants. Royal Purple's brand of synthetic motor oil, which is ...

However, that doesn't mean Royal Purple should be counted out entirely ... An endorsement from a major manufacturer is one ...

Calumet, Inc. (NASDAQ: CLMT) (the "Company," "Calumet," "we," "our" or "us") has successfully closed its previously announced sale of assets related to the industrial portion of its Royal Purple® ...

Most common engine problems, including the Hemi tick, are preventable with timely oil changes ... Redline, Fram, and Royal Purple. Any brand is suitable for the 5.7 Hemi as long as you're pouring ...