Quote:
Originally Posted by canis
You've got a leak somewhere. Brake fluid never needs topping up, it's an entirely closed system. If you've lost fluid it's because it's leaked out.
|
Not at all.
It's fluid pressure which pushes the caliper piston onto the back of the brake pads to maintain braking force.
As the pads wear down, the piston needs to travel further out of the caliper and the brake fluid level will fall accordingly to maintain braking pressure.
Occasional brake fluid top ups can be a normal part of maintenance but are usually unnecessary if the fluid is changed every 2 years.
OP needs to check for pad thickness, caliper operation, air in the system and fluid leaks but low fluid isn't automatically caused by a fluid leak.