Pontiac 2007 G5 Owner's Manual page 300

What to Add
When you do need brake fluid, use only DOT-3
brake fluid. Use new brake fluid from a sealed
container only. See Recommended Fluids
and Lubricants on page 385.
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:
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With the wrong kind of fluid in the
brake/clutch system, the brakes/clutch
may not work well, or they may not even
work at all. This could cause a crash.
Always use the proper brake fluid.
300
Notice:
•
Using the wrong fluid can badly damage
brake/clutch system parts. For example, just
a few drops of mineral-based oil, such as
engine oil, in the brake/clutch hydraulic
system can damage brake/clutch system
parts so badly that they will have to be
replaced. Do not let someone put in the
wrong kind of fluid.
•
If you spill brake fluid on your vehicle's
painted surfaces, the paint finish can be
damaged. Be careful not to spill brake fluid
on your vehicle. If you do, wash it off
immediately. See Washing Your Vehicle on
page 356.