I admit, I don't check my brake fluid every single time I drive the car. I do check it probably three times a month though. I will say this. If I ever feel anything out of the ordinary, I come back home. Have done it before with the old single reservoir master cylinder. It had a very, very slow leak. I returned home after getting it out of the driveway, because the pedal was "a little" lower than normal. Come to find out, the leak was the master cylinder had a crack in it on the bottom port that had a plug in it. That's when I went ahead and made the switch to the disc brake master cylinder on it now. None of us is perfect, I mean that truly. But I think we can do a better job of trying than these guys did.