1998 Oldsmobile Cutlass Owner's Manual - Page 244

Brakes Brake Fluid lining wear. When new linings are put in, the fluid level goes back up. The other reason is that fluid leaking out is of the brake system.f it is, you should have your brake I system fured, sincea leak means that sooner or later your brakes won't work well, or won't work all. at So, it isn't a good idea to "top your brake fluid. off' If Adding brake fluid won't correct a leak. 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 here. It is filled is with DOT-3 brake fluid. There are only two reasons why the brake fluid level the in reservoir rnight go down. The first is that the brake fluid goes down toan acceptable level during normal brake If you have too much brake fluid, it can spill on the engine. The fluid will burn if the engine is hot enough. You or others could be burned, and your vehicle could be damaged. Add brake is fluid only when work done on the brake hydraulic system. 6-24