Chevrolet 2003 Cavalier Owner's Manual page 253

What to Add
Notice:
0
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.
When you do need brake fluid, use only DOT-3 brake
fluid. Use new brake fluid from a sealed container
only. See Part
D:
Recommended Fluids and Lubricants
on page 6-24.
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.
With the wrong kind of fluid
...
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.
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