0W-40 Full Synthetic Motor Oil

The Amsoil Signature Series 0W-40 Synthetic Motor Oil is precision-formulated with cutting-edge technology for superior engine protection and enhanced performance. This oil is designed to exceed industry standards, offering 75% more protection against horsepower loss and wear compared to the API SN specification standard. It achieves this through the development of a robust fluid film that separates metal surfaces and the inclusion of advanced anti-wear additives, thereby maximizing engine life. This synthetic formulation provides significant improvements in critical areas such as LSPI protection, achieving 100% protection against low-speed pre-ignition events, as validated by tests required for the GM dexos1 Gen 2 specification. Furthermore, it offers superior turbocharger protection, exceeding the GM dexos1 Gen 2 requirement by 72%. The oil also demonstrates exceptional resistance to viscosity increase, showing only a 0.1% change in viscosity under industry-standard testing, and maintains twice the viscosity control of the standard even when the test duration is doubled. AMSOIL Signature Series is fortified with a high concentration of detergent additives, providing 28% more acid-neutralizing power than Mobil 1 and 50% more detergents than AMSOIL OE Motor Oil. This helps keep oil passages clean, promotes circulation, controls heat, and minimizes performance-robbing deposits. It offers 90% better protection against sludge formation and maintains superior thermal durability to resist breakdown and keep pistons clean, demonstrating 40% cleaner pistons than required by industry standards even after extended testing.