Everyone knows the importance of running quality lubricants in their vehicle, whether it be for racing or daily driving. But one common problem for years has been the changing standards for certification. In fact, for several years, the American Petroleum Institute (API) has been reducing the maximum limits of common anti-wear additives like zinc/phosphorus in motor oils via their self-governed licensing program. These changes have left many consumers struggling to find an alternative to the more expensive and difficult to find racing oils.

We spoke with the folks at Royal Purple about one new option they have available called HPS (High Performance Street). HPS is formulated with Royal Purple’s proprietary Synerlec additive technology and utilizes a more robust zinc/phosphorous anti-wear package than the API currently allows. Synerlec provides exceptional oil film strength and the load carrying capability needed by flat tappet and/or high lift camshafts, as well as outstanding oxidation resistance as compared to common mineral or synthetic API-licensed engine oils. Royal Purple’s HPS provides an ideal solution for diesel performance enthusiasts looking for added protection.

“Oil specifications are now more focused on emissions equipment compatibility at the expense of valvetrain protection. As a performance oil manufacturer, we felt the need to tailor an oil line to the needs of our performance-minded customers,” said Jared Martin, Royal Purple National Account Manager and STLE Certified Lubrication Specialist.

“Customers can now have the best of both worlds. They can select our API licensed motor oil for their truck(s) under warranty needing emission compliant API motor oil. Those wanting more performance and wear protection can select HPS for modified vehicles and those no longer under warranty.” During our discussion, we asked them to illustrate their point through a bearing comparison. Tests on a new bearing show the difference in wear when using Royal Purple’s HPS compared to the leading synthetic motor oil. All bearings shown above are at 1500X.

Until a new bearing surface is magnified 1500x, the surface appears smooth. The second image shows the same bearing with a roughened surface after using the leading synthetic oil. The third image is the same bearing after using Royal Purple HPS. Royal Purple’s high film strength improves combustion to free up more power, optimize fuel economy, and reduce emissions. High film strength, also, dramatically reduces wear.

HPS rounds out Royal Purple’s line of motor oils and XPR oils formulated for racing engines. “HPS is a very cost-effective alternative to our XPR line for customers looking for the ultimate in street performance,” added Martin.

Royal Purple HPS is available in several popular multi-viscosity grades for both gas and diesel engines: 5W-20, 5W-30, 10W-30, 10W-40 and 20W-50.