1996 Pontiac Sunfire Owner's Manual - Page 252

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 (or remove) brake fluid, asnecessary, only when work is done on the brake hydraulic system. What to Add When you do need brake fluid, use only DOT-3 brake fluid -- such as Delco Supreme11 (GM Part No. 1052535).Use new brake fluid from a sealed container only, and always clean brake fluid the reservoir cap beforeremoving it. @ A CAUTION: If'you have too much brake fluid, it canspill on the engine. The fluid will burn if the engine is hot enough. You or otherscould be burned, and your vehicle could be damaged. Add brake fluid only when work is done on the brake hydraulic system. When your brake fluid fallsto a low level, your brake warning light will come on. See "Brake System Warning Light" in the Index. With the wrong kindof fluid in your brake system, your brakes maynot work well, or they may not evenwork at all. This could cause a crash. Always use the proper brake fluid. 6-29