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International Automotive Technicians Network
Re: Poor brake pedal and weak stopping
Posted to Technical Discussion Forum on 3/25/2020

The seal in the master cylinder cap would be the first thing to swell. If the cap rubber seal is fine, then you are correct. Even if oil was introduced into the system. It won't travel very far. Maybe into the master cylinder cup seals as the brakes pads wear ... Login to read more.