Pontiac G6 2010 Owner's Manual page 308

Do not top off the brake fluid. Adding fluid does not
correct a leak. If fluid is added when the linings are worn,
there will be too much fluid when new brake linings are
installed. Add or remove brake fluid, as necessary, only
when work is done on the brake hydraulic system.
WARNING:
{
If too much brake fluid is added, it can spill on
the engine and burn, if the engine is hot enough.
You or others could be burned, and the vehicle
could be damaged. Add brake fluid only when
work is done on the brake hydraulic system.
When the brake fluid falls to a low level, the BRAKE
FLUID message in the Driver Information Center (DIC)
displays. See DIC Warnings and Messages on
page 4-42.
6-40
What to Add
Use only new DOT 3 brake fluid from a sealed container.
See Recommended Fluids and Lubricants on page 7-10.
Always clean the brake fluid reservoir cap and the
area around the cap before removing it. This helps keep
dirt from entering the reservoir.
WARNING:
{
With the wrong kind of fluid in the brake hydraulic
system, the brakes might not work well. This could
cause a crash. Always use the proper brake fluid.
Notice:
•
Using the wrong fluid can badly damage brake
hydraulic system parts. For example, just a few
drops of mineral-based oil, such as engine oil, in
the brake hydraulic system can damage brake
hydraulic system parts so badly that they will
have to be replaced. Do not let someone put in
the wrong kind of fluid.
•
If brake fluid is spilled on the vehicle's painted
surfaces, the paint finish can be damaged.
Be careful not to spill brake fluid on the vehicle.
If you do, wash it off immediately. See Washing
Your Vehicle on page 6-110.