4 stroke engine oil - Vehicle Compatibility: Two Wheelers. - In normal running, deposits build up and impact engine performance. But Castrol Activ fights deposits, providing superior engine cleanliness to ensure smooth running. - When the engine stops, oil drains to the sump, leaving parts at risk of corrosion. - Castrol Activ with Actibond molecules clings to critical engine parts, for improved corrosion protection, even while the engine is off. - Very good thermal resistance and stability. - Friction control capability. - Imported from India.