Royal Purple HPS Series motor oil is specifically formulated to maximize performance and meet the demands of high performance engines and modified engines. HPS is high performance street motor oil recommended for vehicles no longer under manufacturer warranty and for those seeking a higher level of performance and protection.

Royal Purple’s HPS is fortified with a high level of zinc/phosphorus anti-wear additive and Royal Purple’s proprietary Synerlec® additive technology. This unique blend enables HPS to outperform leading high performance synthetic oils and conventional lubricants for both gasoline and diesel high performance engines. Available viscosities include: 5W-20, 5W-30, 10W-30, 10W-40 and 20W-50.

Royal Purple HPS Series of motor oil responds to increased pressure with increased viscosity. Improved sealing between the piston ring and cylinder wall maximizes horsepower and torque. Its advanced additive technologies improve the condition of metal-to-metal contact under severe load. The advantages are clear. Take a look at the following photos:

Micropolish New Bearing
A new bearing surface appears smooth until magnified 1500x
Micropolish Leading Synthetic
The bearing is scuffed after using the leading high performance synthetic oil
Micropolish HPS
The bearing is visibly smoother after using Royal Purple HPS


HPS – High Performance Street Motor Oil Advantages


Maximum wear protection

Exceptionally high film strength dramatically reduces engine wear and engine heat to extend the life of your engine

Improved performance

Improved sealing between the piston ring and cylinder wall maximizes horsepower and torque and optimizes fuel economy

Better efficiency

Exceptional oxidation stability extends oil life and allows for more miles driven between oil changes saving you time and money and reducing the impact on the environment


Advanced synthetic solvency reduces engine deposits and keeps engines clean for increased fuel economy and engine longevity

Advanced protection

Protects valve trains using roller or flat tappet lifters that require added protection due to high lift/ high ramp rate camshafts

Superior corrosion protection

Maximum protection extends engine life and ramps up efficiency. For vehicles under warranty, Royal Purple recommends its API-licensed oils available at retailers nationwide


Buy HPS online or find a retailer near you.