A brake fluid cap in an engine

How to change your brake fluid

Brake fluid can withstand very high temperatures within your braking system. To keep your brakes in top condition, you need high-quality brake fluid that can help protect your brakes from corrosion and resist any moisture that could impact operation. By changing your brake fluid regularly, you can make sure your brakes are well maintained at all times.
A bottle pouring brake fluid

When should you change your brake fluid?

You should carry out a brake fluid change at least every two years to help get the best performance out of your brakes. You should also refer to your vehicle’s manual to double check your manufacturer’s recommended brake fluid change intervals.

What’s the difference between DOT 3, DOT 4 & DOT 5 brake fluids?

Brake fluids have different ratings that relate to their boiling points. They’re graded for their boiling point temperatures for when the brake fluid is fresh - it’s dry boiling point, and when it has absorbed water - it’s wet boiling point.

The Department of Transportation defines the ratings - so the ratings are referred to as DOT 3, DOT 4 or DOT 5.

How to change your brake fluid: step-by-step

Which brake fluid is right for you?

You need brake fluid that you can trust to take good care of your brakes, as well as having the suitable rating for your vehicle. Find the right Mobil brake fluid to help you drive safely for longer.
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  • Brake fluid dot 4 by a wheel
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