If your car needs a 10W-40 engine oil Castrol offers a range of options that flow like a 10 Weight oil when the engine is cold and a 40 Weight oil when up to normal operating temperature.
Traffic congestion has dramatically increased over the past decade, so that today even a normal driver can stop and start up to 18,000 times a year*. That's annoying but worse, it slowly damages your engine - permanently.
Our breakthrough Castrol MAGNATEC DUALOCK molecules cling to critical engine parts and lock together, forming a powerful force field of protection that dramatically reduces both warm-up and stop-start wear by 50%*.
Non-Stop Protection from Every Start.