Castrol MAGNATECs intelligent molecules cling to your engine and protect it when its needed most during warm-up when up to 75% of engine wear occurs. Castrol MAGNATECs unique formulation protects from the start, dramatically reducing* engine wear to keep it running smoothly. Castrol MAGNATEC Instant Protection From The Moment You Start. * As tested in the industry Sequence IVA wear test.Castrol MAGNATEC 10W-40 is a part synthetic engine oil formulated to suit a wide range of petrol engines, direct and indirect injection diesel engines, LPG and CNG cars, light commercial vehicles and 4WDs. Castrol MAGNATECs Intelligent Molecules bond to metal surfaces to make engine parts more resistant to wear to provide increased protection in high and low temperature applications, providing continuous protection for all driving conditions, styles and temperatures. Now with ultra refined molecules for protection you can see, hear and feel.
I thought group V Ester synthetics also cling to the engine for cold start protection.