Motorcraft BRMC155 Brake Master Cylinder Review

This is a good quality part. As in the photo, with reservoir. Probably a rare repair but I suspect ours may have deteriorated due to a bad vacuum valve (probably rare again) resulting in brake fluid being dumped into the vacuum booster. The fluid loss happened before we bought the used car, so we didn't know until we heard a hissing sound and fluid intermittently dripping onto the floor under the brake pedal (and a rare "Check Brakes" light which we ignored, because we got blunt, and the brakes