Castrol POWER1 4T 10W-30 is an advanced technology semi synthetic engine oil formulated for use with the latest generation 4-stroke motorcycle engines. Castrols Power Release formula promotes improved oil flow, reducing friction on engine internals to increase engine output even in high RPM operation. This engine oil also contains Trizone Technology to provide the ultimate in protection and performance for your Engine, Clutch and Gearbox Castrol POWER1 4T 10W-30 engine oil is suitable for use in a wide range of 4-stroke motorcycles including on road and off road carburetted or EFI engines where SAE 10W-30, JASO MA/MA2 or API SL specifications are recommended. Castrol POWER1 4T 10W-30 Is also safe to use in bikes fitted with catalyst emissions control devices. To find the engine oil type and weight suggested for your vehicle check with your manufacturer, vehicle user manual, your local mechanic or head in-store and talk to one of our friendly team.