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  1. Home
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  4. Oil viscosity grades explained
  5. 10W-40

10W-40 EDGE & GTX motor oils

If your car needs a SAE 10W-40 motor 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.

Image of a car's engine and oil next to text reading 10w40

 

Choosing the best 10W-40 oil for your engine

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

Castrol EDGE SAE 10W-40 motor oil

Castrol EDGE 10W-40 oil

Castrol Edge High Mileage SAE 10W-40 motor oil

Castrol EDGE High Mileage 10W-40 oil

Castrol GTX SAE 10W-40 motor oil

Castrol GTX 10W-40 oil

Castrol GTX High Mileage SAE 10W-40 motor oil

Castrol GTX High Mileage 10W-40 oil