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IT'S MORE THAN JUST OIL. IT'S LIQUID ENGINEERING.

  1. Home
  2. CAR ENGINE OIL & FLUIDS
  3. ENGINE OILS
  4. ENGINE OIL VISCOSITY GRADES
  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 EDGE, an advanced full synthetic 10W-40 motor oil, is Castrol’s strongest oil and a great option for those who want the very best for their car. Castrol GTX MAGNATEC is a premium full synthetic 10W-40 that offers superior wear protection. If your car has over 75,000 miles on the odometer, Castrol GTX High Mileage 10W-40 can help protect your emission system while helping to extend the life of your engine. Castrol GTX 10W-40 Double-Action formula has been engineered to clean away old sludge while preventing new sludge formation.