Why am I losing so much brake fluid?

Brake fluid is not considered a "top up" fluid. If it is low, there is usually a problem.

Brake fluid level in the master cylinder will drop as the linings (pads or shoes) wear and the calipers or wheel cylinders extend further to compensate. This added fluid may need to be removed when renewing pads or shoes.

Brake fluid level may also be low because of a leak, which could result in a loss of hydraulic pressure and consequently, a significant loss of braking ability. Modern cars have split hydraulic circuits to ensure against total hydraulic failure.

Find out more about our brake fluids.