Hot Rod Magazine TV Compares Petroleum Based and Synthetic Motor Oil

One of the big problems with petroleum based engine oil is the hotter it gets the less able it is to prevent metal-to-metal contact. It’s called thermal viscosity breakdown. However with Royal Purple synthetic oil, the stability of the oil is far superior so when the motor gets hot, we don’t have that problem.

Note:  Improvements in performance depend on the vehicle, it’s condition and how it’s used.  This video is not intended to imply that all users will experience the same performance gain by upgrading to Royal Purple.