Hummer 2006 H3 - Manual (Page 309)

Checking Brake Fluid
You can check the brake fluid without taking off the cap.
Look at the brake fluid reservoir. The fluid level should
be above MIN. If it is not, have your brake system
checked to see if there is a leak.
After work is done on the brake hydraulic system,
make sure the level is above the MIN but not over
the MAX mark.
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 6-12.
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.
• 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 5-86.
5-37