Royal Purple XPR Extreme Performance Racing Oil – 5W-30 Full Synthetic | 1 Quart

Royal Purple XPR (Extreme Performance Racing) 5W-30 is a full synthetic racing motor oil engineered for the demands of high-performance and competition engine applications — delivering superior film strength, thermal stability, and wear protection at the elevated temperatures, pressures, and RPM levels that racing engines operate under. Built around Royal Purple's proprietary Synerlec additive technology — a high-film-strength additive system that provides exceptional metal-to-metal protection under extreme load conditions — XPR 5W-30 is the correct oil for competition engines where standard street motor oils cannot maintain adequate film strength and protection. Proven in NASCAR, NHRA, World of Outlaws, and Bonneville Salt Flats competition, XPR is a racing oil with a genuine competition pedigree — not a marketing claim.

Key Features:

• Royal Purple Synerlec additive technology — proprietary high-film-strength additive system that provides exceptional metal-to-metal protection under extreme load, temperature, and pressure conditions — the core technology that differentiates XPR from standard synthetic motor oils
• Full synthetic base oil — full synthetic formulation for superior thermal stability, oxidation resistance, and viscosity retention at the elevated temperatures that racing engines generate
• 5W-30 viscosity — multi-grade 5W-30 viscosity for correct cold-start oil flow and correct operating viscosity at racing engine temperatures
• Competition-proven — used in NASCAR, NHRA, World of Outlaws, and Bonneville Salt Flats competition — a genuine racing pedigree validated in the most demanding motorsport environments in North America
• Extreme temperature and pressure performance — engineered for the elevated temperatures, pressures, and RPM levels that competition engines operate under — where standard street motor oils cannot maintain adequate film strength
• 1 quart packaging — single quart for precise oil quantity management in competition engine builds and top-up applications

Performance & Technology:

• Synerlec Additive Technology: Royal Purple's Synerlec additive system is the defining technology in the XPR formulation — a proprietary additive package that provides a high-strength, tenacious oil film on metal surfaces under extreme load conditions. Synerlec's film strength significantly exceeds that of conventional additive systems — maintaining a protective oil film between bearing surfaces, camshaft lobes, valve train components, and piston rings at the elevated temperatures and pressures that competition engines generate. For racing engines where bearing clearances are tighter, RPM levels are higher, and oil temperatures are more extreme than street applications, Synerlec's film strength advantage translates directly to reduced wear and improved engine longevity
• Thermal Stability: XPR's full synthetic base oil provides superior resistance to thermal breakdown and oxidation at the elevated temperatures that competition engines generate — maintaining correct viscosity and film strength across a wider temperature range than conventional or semi-synthetic alternatives. Thermal stability is critical in racing applications where oil temperatures can exceed the range that street motor oils are formulated to handle
• Competition Validation: XPR's use in NASCAR, NHRA, World of Outlaws, and Bonneville Salt Flats competition provides genuine validation of its performance under the most demanding motorsport conditions in North America — environments where oil failure has immediate and catastrophic consequences. This competition pedigree is not a marketing claim — it is evidence of XPR's ability to protect competition engines under sustained extreme operating conditions
• Viscosity Retention: XPR's full synthetic formulation maintains correct viscosity across the operating temperature range of a competition engine — providing correct oil pressure and film thickness at both cold start and at full operating temperature, and resisting viscosity breakdown (shear) under the high shear forces that competition engine bearing systems generate

Specifications:

• Brand: Royal Purple
• Part Number: RLP06021
• Barcode: 10641330010214
• Series: XPR (Extreme Performance Racing)
• Viscosity: 5W-30
• Base Oil: Full synthetic
• Additive Technology: Synerlec
• Volume: 1 quart (946 mL)
• Application: Competition and high-performance racing engines

Recommended Applications:

• NASCAR, NHRA, and sanctioned circuit racing engines requiring a high-film-strength full synthetic racing oil
• High-performance naturally aspirated and forced induction competition engines where standard street motor oils cannot maintain adequate film strength at operating temperatures and pressures
• Drag racing, road racing, oval racing, and endurance racing applications where oil temperature and pressure demands exceed the capability of street motor oils
• Bonneville and land speed record applications where sustained extreme operating conditions demand maximum oil film strength and thermal stability
• Top-up and oil change applications for competition engines already running Royal Purple XPR

Usage Notes:

• XPR is a competition racing oil — verify compatibility with your engine's specific requirements, bearing clearances, and oil system before use
• Not recommended as a street motor oil replacement — XPR is formulated for competition engine applications and may not be appropriate for street-driven vehicles with catalytic converters (verify compatibility with your emissions system)
• Verify viscosity selection (5W-30) is correct for your engine's bearing clearances, operating temperature range, and oil system specification before use
• Store in a cool, dry location away from direct sunlight and heat sources — do not use oil that has been contaminated or stored improperly

Why Royal Purple XPR?

Royal Purple is a US-based synthetic lubricant brand with a strong following in the performance and racing community — known for their Synerlec additive technology and a product lineup that spans street performance oils, racing oils, gear oils, and specialty lubricants. The XPR line represents Royal Purple's highest-performance racing oil formulation — developed for competition applications where standard synthetic motor oils cannot provide adequate protection. For competition engine builders and racers who want a full synthetic racing oil with a genuine competition pedigree and proven Synerlec film strength technology, Royal Purple XPR is a well-regarded choice in the North American racing community.

Perfect For:

• Competition engine builders and racers running NASCAR, NHRA, World of Outlaws, or sanctioned circuit racing who need a proven, high-film-strength full synthetic racing oil
• High-performance forced induction and naturally aspirated builds where oil temperature and pressure demands exceed the capability of standard street motor oils
• Drag racing and land speed builds where sustained extreme operating conditions demand maximum oil film strength and thermal stability
• Racers who want Royal Purple's Synerlec additive technology in a 5W-30 viscosity for their specific engine's bearing clearance and operating temperature requirements

Note: Competition racing oil — verify compatibility with your engine's specific requirements before use. Not recommended as a street motor oil replacement for vehicles with catalytic converters. Verify 5W-30 viscosity is correct for your engine specification. Store properly and do not use contaminated oil.