1998 Chevrolet Lumina Owner's Manual - Page 267

Brakes Brake Fluid leaking outof the brake system. If it you should is, have your brake system fixed, since leak means that a sooner orlater your brakes won't work well, 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. should add You (or remove) brake fluid, as necessary, only when work is done on the brake hydraulic system. Your brake master cylinder reservoir is here. It is filled with DOT-3 brake fluid. There are only two reasons why brake fluidlevel in the the reservoir mightgo down. The first is that the brake fluid goes down to acceptable level during normal an brake lining wear. When new linings put in, the fluid are level goesback up. The other reason is that fluid is If you have too much brake fluid, it can spill on the engine. The fluid will burnthe engine if is hot enough. You or others could be burned, Add and your vehicle could be damaged. brake fluid only when workis done on the brake hydraulic system. When your brake fluid falls tolow level, your brake a warning light will come on. See "Brake System Warning Light" in the Index. 6-29