Castrol MAGNATECs intelligent molecules cling to the engine like a magnet, providing an extra layer of protection. Now with ultra-refined molecules, you have protection you can see, hear and feel. Up to 75% of engine wear happens while your engine warms up, and when the engine stops, oils drain off critical engine parts. MAGNATECs unique formulation protects from the moment you start, dramatically reducing* engine wear. Castrol MAGNATEC 5W-30 DX is a full synthetic engine oul suitable for use in automotive petrol engines where the manufacturer recommends an API SP, ILSAC GF-6 or earlier specification 5W-30 lubricant. Castrol MAGNATEC 5W-30 DX is approved for use in vehicles that require a GM dexos1 Gen 3 specification 5W-30 lubricant. Castrol MAGNATEC 5W-30 DX is also suitable for use in vehciles that require a 5W-30 lubricant that meets Ford WSS-M2C946-A/ WSS-M2C946-B1/ WSS-M2C961-A1 specifications. *As tested in the industry Sequence IVA wear test.