Up to 75% of engine wear happens while your engine warms up. When the engine stops, oils drain off critical engine parts. However, Castrol Magnatec's intelligent molecules don't. They cling to the engine like a magnet, providing an extra layer of protection. Castrol Magnatec's unique formulation protects from the moment you start, dramatically reducing* engine wear. This new formula contains ultra-refined molecules, for protection you can see, hear and feel. *As tested in the industry Sequence IVA wear test.