“Thank you for a superb oil.

I’ve just done 120,000 miles on a 1980 CB400N Honda with little more than regular servicing, a light throttle hand and Royal Purple every 12,000 miles.

For an engine that rarely lasts more than 60,000 miles in regular use, you have proved yourself worthy in my book and I’m looking forward to at least another 80,000 miles worth of trouble-free Royal Purple miles. Thank you kindly.”

—anonymous customr

“I changed the oil to RP …and put on 2,000 or so miles …and can tell you the difference between the Harley-Davidson Syn3 and RP was …drastic.

The bike shifts incredibly well and the oil temp dropped 20 degrees …and the fans come on 50 percent less often.”

—Dave Engelman, New Jersey