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  5. 10W-40

10W-40

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.

Choose the best 10W-40 oil for your engine

Castrol offers a broad range of 10W-40 engine oils, including  premium full synthetic, high mileage and conventional, meeting the needs of both drivers and vehicle manufacturers.

Castrol MAGNATEC 10W-40

Castrol MAGNATEC’s unique formulation protects from the moment you start, dramatically reducing* engine wear. Now with ultra refined molecules, for protection you can see, hear and feel.