Driven Racing Oil KRT 4 Stroke synthetic racing motor oil features an advanced friction modifier package to increase horsepower in 4 stroke karting engines; it utilizes select synthetic base oils to deliver increased high temperature durability. Ideal for clone engines and Honda engines, the oil delivers dyno proven power gains and race proven durability. The Driven Racing Oil KRT 4 Stroke synthetic racing motor oil is compatible with methanol and high octane race fuels. It uses advanced synthetic technology for greater film thickness under high loads despite being low viscosity oil. The thermal stability defends against oil consumption, foaming and viscosity breakdown.