If this were true, every new/rebuilt MC would be bad. Don't worry about it. I've screwed up during brake fluid flushes, ran all the fluid out of the MC, and once the fluid is replaced and the system RE-bled....:(....it all works as it should. Carry on. larry sandiego16v i have heard that if the master goes empty in these cars, they are automacticly bad? whats up with that