1996 Chevrolet Blazer Owner's Manual - Page 276

Brakes Bra.ke Fluid leaking out of the brake system. If it is, you should have your brake systemfixed, si.ncea leak means that sooner or later your brakes won't work well, won't or work at all. So, it isn't a good idea to "top off' your brake fluid. Adding brake fluid won't correcta 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 (or remove) brake fluid, as necessary, only when work is done on the brake hydraulic system. I A CAUTION: Your brake master cylinder reservoir is here. It is filled with DOT-3 brake fluid. There are only two reasons why the brake fluid level in the reservoir might go down. The first is that the brake fluid goes down to an acceptable level during normal brake lining wear. When new liningsare put in, the fluid level goes back up. The other reason that fluid is is If you havetoo much brakefluid, it can spill will on the engine. The fluid burn if the engine is hot enough.You or others could be burned, and your vehicle could be damaged. Add brake fluid only when work is done the brake on hydraulic system. Refer to the MaintenanceSchedule to determine when to check your brake fluid. See "Periodic Maintenance Inspections'' in the Index. 6-28