Buick 2004 LeSabre Owner's Manual page 276

The other reason is that fluid is leaking out of the brake
system. If it is, you should have your brake system
fixed, since a leak means that sooner or later your
brakes will not work well, or will not work at all.
So, it is not a good idea to "top off" your brake fluid.
Adding brake fluid will not correct a leak. If you add fluid
when your linings are worn, then you will 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:
{
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
fluid only when work is done on the brake
hydraulic system.
When your brake fluid falls to a low level, your brake
warning light will come on. A chime will sound if you try
to drive with this warning light on. See Brake System
Warning Light on page 3-37.
5-38
What to Add
When you do need brake fluid, use only DOT-3 brake
fluid. Refer to Part D: Recommended Fluids and
Lubricants on page 6-23. Use new brake fluid from a
sealed container only.
Always clean the brake fluid reservoir cap and the area
around the cap before removing it. This will help
keep dirt from entering the reservoir.
CAUTION:
{
With the wrong kind of fluid in your brake
system, your brakes may not work well, or
they may not even work at all. This could
cause a crash. Always use the proper brake
fluid.
Notice:
•
Using the wrong fluid can badly damage brake
system parts. For example, just a few drops of
mineral-based oil, such as engine oil, in your
brake system can damage brake system parts so
badly that they will have to be replaced. Do not
let someone put in the wrong kind of fluid.