What To Add; Brake Wear - Chevrolet 2008 Optra Owner's Manual

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 Part D: Recommended Fluids and Lubricants on
page 6-26.
Always clean the brake fluid reservoir cap and the area
around the cap before removing it. This helps keep
dirt from entering the reservoir.
CAUTION:
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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.
5-32
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 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 5-82.

Brake Wear

Your vehicle has disc brakes. Disc brake pads have
built-in wear indicators that make a high-pitched warning
sound when the brake pads are worn and new pads
are needed. The sound can come and go or be heard all
the time your vehicle is moving, except when you are
pushing on the brake pedal firmly.