Unleash maximum performance and gain ultimate protection for your modified or high-performance engine with Royal Purple HPS (High Performance Street) 10W-30 Synthetic Motor Oil (P/N: 31130), available in a 1-quart bottle at Straight Six Imports. HPS is the premium lubricant choice for demanding modified imports, turbocharged vehicles, and performance street/track cars no longer under factory warranty.

Unlike typical API-licensed oils, HPS is fortified with a significantly higher level of Zinc/Phosphorus anti-wear additive (ZDDP) combined with Royal Purple's proprietary Synerlec® additive technology. This unique blend provides an exceptionally high film strength that dramatically reduces metal-to-metal contact, friction, and heat, even under extreme pressure.

Key Performance Advantages for Modified Engines:

• Maximum Wear Protection (High ZDDP): Fortified ZDDP protects valvetrain components, including high-lift flat tappet camshafts and performance roller lifters.

• Increased Horsepower & Torque: Improved sealing between the piston ring and cylinder wall maximizes combustion efficiency and optimizes fuel economy.

• Superior Thermal Stability: High film strength and synthetic base resist thermal breakdown, allowing engines to run cooler and extending oil life.

• Advanced Cleaning: Synthetic solvency reduces harmful engine deposits and keeps internals clean for long-term reliability.

• Low Speed Pre-Ignition (LSPI) Protection: Advanced additive chemistry helps reduce LSPI in modern turbocharged Gasoline Direct Injection (GDI) engines.

Maximize the potential and lifespan of your performance engine. Choose the superior protection and power of Royal Purple HPS 10W-30 from Straight Six Imports.