Royal Purple 37530 HPS SAE 5W-30 High Performance Synthetic Motor Oil 55-Gallon Drum

Royal Purple HPS (High Performance Street) SAE 5W-30 motor oil is a premium full-synthetic lubricant specifically formulated for high-performance and modified engines. Available in a convenient 55-gallon drum, this oil is fortified with an elevated level of zinc/phosphorus (ZDDP) anti-wear additives and Royal Purple's proprietary Synerlec additive technology — a unique combination that allows HPS to outperform leading synthetic and conventional motor oils.

HPS is engineered to respond to increased pressure with increased film strength, providing superior metal-to-metal protection under the most severe operating conditions. It is recommended for vehicles no longer under manufacturer warranty and for enthusiasts and professionals seeking a higher level of engine protection and performance output. For vehicles still under warranty, Royal Purple recommends its API-licensed oil line.

Key Performance Advantages:

• Reduces heat and wear — Advanced additive package significantly lowers friction and operating temperatures to extend engine life
• Maximizes horsepower and torque — Improves piston ring-to-cylinder wall sealing for optimal compression and power output
• Flat tappet and roller lifter protection — High zinc/phosphorus levels protect valve trains with high-lift, high-ramp-rate camshafts
• Extended drain intervals — Exceptional oxidation stability maximizes oil life and reduces maintenance frequency
• Engine cleanliness — Advanced synthetic solvency reduces deposits and keeps internal engine components clean
• Synerlec technology — Proprietary additive that improves lubrication film integrity under extreme pressure conditions

Royal Purple HPS 5W-30 is also available in additional viscosities including 5W-20, 10W-30, 10W-40, and 20W-50 to suit a wide range of engine specifications. The 55-gallon drum format is ideal for shops, fleets, and high-volume users seeking professional-grade lubrication at scale.