API SP Gasoline Engine Oils API SP gasoline engine oils are a type of motor oil that meets the performance requirements set by the American Petroleum Institute (API) for gasoline engines. These Fully Synthetic Gasoline Engine Oils are formulated to provide enhanced protection and performance for modern engines, including those with turbochargers and direct fuel injection systems. API SP oils are designed to offer improved protection against low-speed pre-ignition (LSPI), which can occur in some modern engines and cause engine damage. Automotive Lubricating Oils also provide better protection against deposits, wear, and oxidation, helping to extend engine life and maintain performance. To ensure compliance with the API SP specification, oils undergo rigorous testing to meet specific performance requirements. These tests evaluate the oil's ability to provide proper lubrication, reduce engine wear, and prevent deposit formation. When choosing an oil for your gasoline eng…