Chevrolet Corvette 2003 Owner's Manual page 266

Checking Brake Fluid
You can check the brake fluid without taking off the cap.
Just look at the brake fluid reservoir. The fluid level
should be above the MIN mark on the reservoir. If it isn't,
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 between the MIN and MAX marks.
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 6-14 . 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.
5-38
{
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'll have to be replaced.
Don't 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
"Appearance Care" in the Index.