Fire Power Racing Ester Fortified Full Synthetic 4-Stroke Engine Oil Fire Power engine oils are designed for modern powersports applications. Developed and produced by a leading OEM engine oil manufacturer. Fire Power oils have tried and true durability, proven through laboratory and controlled engine dyno testing. Powersport formulation uses high strength viscosity modifiers for superior shear stability and engine protection. Features Synthetic Racing Ester formulation maximizes oil life and offers the ultimate protection under extreme heat and racing conditions High tech formula with additives for any type wet clutch application and engine protection Shear stable viscosity modifiers resist oil break down and keep engines running like new Exceeds OEM warranty specifications for engines requiring API SL, Jaso Ma/Ma2 oil