1993 Pontiac Firebird Owner's Manual - Page 244

So, it isn't a good idea "top off' your to brake fluid. Adding brake fluid won't correct a leak.If you add fluid whenyour 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. CAUTION: A If you have too much brake on fluid, it can spill the engine. The fluid will burn the engine is if hot enough. You or others could be burned, and your vehicle could be damaged. Add brake fluid only when work is done on the brake hydraulic system. T Che,&lErzvke Fluid: o You a n check the brake fluid without taking off the cap. Just look at the brake be fluid reservoir. The fluid level should above the plastic seam in the reservoir. If it isn't, haveyour brake system if checked to see there is a leak. After work is dane on the hrake hydraulic system, make sure the levelis above the of plastic seam, near the base the filler neck. What to Add: When you do need brake fluid, only use DOT-3 brake fluid- such as DelcoSupreme 11@(GM Part No. 1052535). Use new brake fluidfrom a sealed container only. to Lefer to the Maintenance Schedule etermine when to check your brake luid. See "Periodic Maintenance nspections" in. the Index.