I don't know if anyone else has expierenced this but my Z made a loud squeak every time the brakes were applied hard.There is a rubber bellows around the brake push rod under the brake peddle with slots in it to allow the air to rush into the brake servo.I cleaned out the slots (carpet fluff!) and now no more squeak.Maybe the slots are closing up with the ageing of the rubber.
I don't know if anyone else has expierenced this but my Z made a loud squeak every time the brakes were applied hard.There is a rubber bellows around the brake push rod under the brake peddle with slots in it to allow the air to rush into the brake servo.I cleaned out the slots (carpet fluff!) and now no more squeak.Maybe the slots are closing up with the ageing of the rubber.