1995 Cadillac Seville Owner's Manual - Page 300

- Brake Master Cylinder Your brake master cylinder ishere. It is filled with DOT-3 brake fluid. - - There are only two reasons why the brake fluid level in your master cylinder might go down. The first is that the brake fluid goes down to an acceptable level during normal brake lining wear. When new linings are put in, the fluid level goes back up. The otherreason is that fluid is leaking out of the brakesystem. If it is, you should have your brake system fixed, since a leak means that sooner or later brakes won't work well, your or won't work at all. So, it isn't a good idea to "top off'' your brake fluid. Adding brake fluid won't correct a leak. If you add fluid when your linings are worn, then you'll have too much fluid when you get new brake linings. You should add (orremove) brake fluid, as necessary, only when work is done on the brake hydraulic system. 6-29