Castrol activ 4t 15w50 Find the best engine oil for your motorcycle Exceeds api sj and jaso ma2. Modern high-quality engine oil for 4-stroke motorcycle engines. The vital ingredient engineered to satisfy any 4-stroke. A product committed to delivering superb strength & ultimate component protection. Fortified with trizone technology for optimum performance protection of the engine, gears and clutch. Wear protection formula ensures continuous protection throughout the drain interval so that you can start and go in confidence. Continuous protection for your vehicle. Castrol Activ is like a 24x7 bodyguard that protects your motorbike / scooter from stressful everyday commutes in the city. it's superior technology delivers continuous protection at all times for your motorcycle / scooter engine. In 2-stroke motorcycles the engine oil is lubricant that is continuously injected into the crankcase and burned with each combustion cycle. It must prevent piston scuffing and effectively lubricate bearings, at the same time resisting deposit formation and smoke emission. In 4-stroke motorcycles the engine oil must simultaneously meet the high-stress protection requirements of the engine, the friction requirements of the clutch pack and the wear protection requirements of the gearbox. When should i change motorcycle engine oil Always follow the manufacturers oil change interval recommendations as described in the owner manual. Due to the smaller sump size and higher engine rpm and operating temperatures, motorcycle engine oil change intervals are generally shorter than that for passenger car engine oils. Castrol Activ Castrol Activ with actibond molecules clings to and protects critical engine components even when the engine is switched off, providing continuous protection in all riding conditions. Continuous protection even when the engine is off.