Royal Purple
HPS™ – High Performance Street Engine Oil

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

This unique blend enables HPS to outperform leading synthetics and conventional lubricants for both gasoline and diesel engines. Royal Purple’s HPS is fortified with a high level of zinc/phosphorus anti-wear additive and Royal Purple’s proprietary Synerlec® additive technology. 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. It’s advanced additive technologies, such as Synerlec, improves the condition of metal-to-metal contact under severe conditions for greater protection.

Royal Purple Logo
New HPS High Film Strength Street Motor Oil Test
SAE 5W30
946 ml
SAE 10W30
946 ml
SAE 20W50
946 ml

Weights/Grades not listed here are available via special order. (usually 2 or 3 days)
Phone for prices.

Reduce the Friction
Increase the Horse Power & Mileage

Performance Advantages

Maximum wear protection

Exceptionally high film strength for dramatic reductions in engine wear and reduced 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, money and reducing the impact on the environment


Advanced synthetic solvency reduces engine deposits and keeps engines clean

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

Provides superior corrosion protection

For vehicles under warranty, Royal Purple recommends its API-licensed oils available at retailers nationwide.


Synerlec® Additive Technology

Synerlec, Royal Purple’s proprietary, additive lubricant technology, is the cornerstone of RP’s entire product line. It creates an ionic bond that adheres to metal parts to provide continuous protection even at start-up and strengthens the oil to provide unparalleled performance and protection.

Royal Purple’s high film strength prevents contact between metal parts reducing friction and heat thereby transferring more power to the drive wheels while maximizing the lubricant service life. As well, Synerlec amplifies the already-exceptional oxidation resistance of the synthetic base oils.

Royal Purple remains on the metal surface long after ordinary lubricants would have been squeezed out by pressure and heat. It actually improves mating surfaces by responding to increased pressure with increased viscosity until the metal peaks (asperities) undergo deformation and flow into the low spots. Over time, the metal surface becomes extremely smooth and can even develop a mirror-like surface.

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