Ask a Question

Technical Questions

Can't find an answer in our Help Center? Submit a question, and we'll get back to you soon.

Need Business/Order Related Support?

Search our Help Center
Get answers to business and order questions from our experienced Customer Service representatives.

Website Feedback

How are we doing? We really are interested in knowing how you feel about DX Engineering. Contact us with your comments - good, bad, great, so-so, or whatever. We want to hear from you!

Now at Summit Racing: Royal Purple HPS Street Motor Oil

A high performance motor demands high performance oil.

Royal Purple created HPS Series Motor Oil for performance street, high mileage, and diesel engines. This synthetic oil offers advanced wear and corrosion protection, plus improved performance and service life. Royal Purple HPS Street Motor Oil is also well suited to the higher pressures found in a performance engine, providing a better seal between the piston ring and cylinder wall. This results in more horsepower and torque.

The secret is Royal Purple’s advanced Synerlec® additive technology. HPS Street Motor Oil is fortified with a high level of zinc and phosphorus. This special formulation provides superior anti-wear characteristics for both roller and flat tappet cam motors with high-lift camshafts. The oil’s synthetic solvency reduces engine deposits, which cleans engine internals for increased economy and engine life. Exceptional oxidation stability allows for more miles between oil changes.

Royal Purple offers HPS Street Motor Oil in the following viscosities.

5W20
5W30
10W30
10W40
20W50

Click here to see Royal Purple HPS Street Motor Oil at Summit Racing.