Royal Purple HPS 5W-20 High Performance Street Synthetic Motor Oil – 1 Quart

Protect your engine with one of the most advanced street motor oils available — Royal Purple HPS (High Performance Street) 5W-20 Synthetic Motor Oil. Fortified with elevated levels of zinc/phosphorus (ZDDP) anti-wear additive and Royal Purple’s proprietary Synerlec additive technology, HPS 5W-20 is engineered to outperform leading synthetic and conventional lubricants in both gasoline and diesel engines. Whether you’re running a modern fuel-efficient four-cylinder, a performance V6, or a high-output V8, Royal Purple HPS delivers the film strength, wear protection, and engine cleanliness that your engine deserves.

Key Features:

• Royal Purple Synerlec additive technology — proprietary additive package that provides superior film strength and lubricity beyond what conventional synthetic base stocks alone can deliver
• Elevated zinc/phosphorus (ZDDP) anti-wear additive — higher ZDDP concentration than many competing synthetic oils for superior protection of camshafts, lifters, and high-load valve train components
• 5W-20 viscosity — factory-specified viscosity for a wide range of modern gasoline engines, providing excellent cold-start flow and robust film strength at operating temperature
• Full synthetic formulation — 100% synthetic base stocks for superior protection, cleanliness, and thermal stability versus conventional and semi-synthetic oils
• Gasoline and diesel compatible — suitable for use in both gasoline and diesel engines
• HPS (High Performance Street) designation — Royal Purple’s street-focused performance oil lineup, engineered for daily-driven performance vehicles

Performance Benefits:

• Synerlec Film Strength: Royal Purple’s proprietary Synerlec technology creates a stronger, more durable oil film between moving parts than conventional synthetic formulations — reducing metal-to-metal contact and wear under the high loads and temperatures of performance driving
• Elevated ZDDP Protection: Higher zinc/phosphorus concentration provides superior anti-wear protection for camshaft lobes, lifters, and valve train components — particularly important for performance engines and any application with flat tappet camshafts
• Cold-Start Protection: 5W cold-start rating ensures rapid oil flow to critical engine components at startup — the period when the majority of engine wear occurs — even in cold Canadian winters
• Thermal Stability: Full synthetic base stocks resist viscosity breakdown and oxidation at sustained high operating temperatures, maintaining consistent protection through extended performance driving
• Engine Cleanliness: Synthetic formulation resists sludge and deposit formation, keeping oil passages, rings, and valve train components clean for consistent performance and long engine life
• Outperforms Conventional Synthetics: Royal Purple’s HPS formulation is engineered to outperform leading synthetic and conventional lubricants — delivering measurable improvements in wear protection and film strength

Specifications:

• Brand: Royal Purple
• Part Number: 36520
• Product Line: HPS (High Performance Street)
• Viscosity: 5W-20
• Type: Full synthetic motor oil
• Key Additives: Synerlec technology + elevated zinc/phosphorus (ZDDP)
• Volume: 1 US quart (946mL)
• Compatible Engines: Gasoline and diesel
• API Rating: Refer to Royal Purple product documentation for current API certification

Applications:

• Modern gasoline engines specifying 5W-20 viscosity — common in Honda, Toyota, Ford, and many other manufacturers’ current and recent model year vehicles
• Performance four-cylinder, V6, and V8 engines where superior film strength and ZDDP protection are desired over standard synthetic oils
• Daily-driven performance vehicles where HPS’s combination of street drivability and elevated protection is ideal
• Diesel engines specifying 5W-20 viscosity — verify API certification compatibility with your specific diesel application
• Verify compatibility with your engine manufacturer’s oil specification and API certification requirements before use

What’s Included:

• Royal Purple HPS 5W-20 synthetic motor oil – 1 quart (36520)

Royal Purple Synerlec Technology:

Synerlec is Royal Purple’s proprietary additive technology — a unique formulation that enhances the base oil’s natural lubricity and film strength beyond what conventional synthetic additives can achieve. Synerlec works by creating a stronger, more tenacious oil film on metal surfaces under high contact pressure — reducing the metal-to-metal contact that causes wear, heat generation, and power loss. Combined with elevated ZDDP anti-wear additives, Synerlec gives Royal Purple HPS oils a measurable advantage in wear protection and film strength over competing synthetic formulations — a difference that translates to longer engine life, reduced operating temperatures, and improved efficiency.

Why Elevated ZDDP Matters:

Zinc dialkyldithiophosphate (ZDDP) is a sacrificial anti-wear additive that forms a protective chemical film on metal surfaces under high contact pressure — particularly on camshaft lobes, lifter faces, and other high-load valve train components. Modern passenger car motor oils have progressively reduced ZDDP concentrations to protect catalytic converters and meet current API certification standards. While adequate for stock engines under normal driving conditions, these reduced ZDDP levels can leave performance engines, modified builds, and flat tappet camshaft applications with less anti-wear protection than optimal. Royal Purple HPS’s elevated ZDDP concentration provides the additional protection that performance engines demand — without sacrificing compatibility with modern emissions systems.

Why Royal Purple?

Royal Purple has been producing high-performance synthetic lubricants since 1986, with a product lineup trusted by professional racing teams, OEM manufacturers, and performance enthusiasts worldwide. Their HPS (High Performance Street) lineup is specifically engineered for daily-driven performance vehicles — delivering the elevated protection of a racing-inspired formulation in a street-compatible package that meets modern API certification requirements.

Perfect For:

• Modern Honda, Toyota, Ford, and other vehicles specifying 5W-20 motor oil seeking a premium synthetic upgrade
• Performance four-cylinder and V6 builds where superior film strength and ZDDP protection are desired
• Daily-driven performance vehicles where HPS’s combination of street drivability and elevated protection is the ideal choice
• Any engine where the owner wants to go beyond standard synthetic oil quality for maximum protection and longevity
• Enthusiasts who want Royal Purple’s proven Synerlec technology and elevated ZDDP in their daily driver

Pro Tip: Change oil at the interval recommended by your vehicle manufacturer — or more frequently for performance and track use. Even the best synthetic oil degrades over time and mileage; Royal Purple HPS’s superior formulation extends protection within the change interval, but does not eliminate the need for regular oil changes.

Note: Verify your engine manufacturer’s oil viscosity specification (5W-20) and API certification requirements before use. While 5W-20 is specified for many modern engines, some applications require different viscosity grades.