Quote:
Originally Posted by canis
I thought it was bad practice to top up this usage? Otherwise when you replace the pads, when the piston is forced back to top, all the extra fluid overflows....?
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To avoid this, you simply attach a tube to the bleed nipple and open the nipple prior to pushing the piston back in.
As the piston is retracted to accommodate the new pads, this will eject the worst fluid out of the system (the caliper fluid) via the bleed nipple and no overflow will occur at the reservoir.
Best practice though is to refresh all the fluid when replacing the pads to give the best operation and avoid having to revisit the area prematurely.