Royal Purple High Performance Motor Oil 0W-20 Premium Synthetic Motor Oil, 5 Quarts. Royal Purple uses premium synthetic base oils and proprietary additives to enhance engine protection and performance, especially for modern engines with features like turbochargers, gasoline direct injection (GDI), and start/stop systems.  GDI engines have achieved unprecedented power and fuel economy, causing smaller engines to operate under higher loads, leading to increased wear and low-speed pre-ignition (LSPI). Royal Purple High Performance engine oils incorporate advanced additives to address these issues, ensuring engines maintain their performance and reliability.         Weight: 10 lbs