Chevrolet Express Owner's Manual page 282

After work is done on the brake
hydraulic system, make sure the
level is above the MIN but not over
the MAX mark.
Use only new DOT 3 brake fluid
from a sealed container. See
Always clean the brake fluid
reservoir cap and the area around
the cap before removing it. This
helps keep dirt from entering the
reservoir.
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.
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 brake fluid is spilled on the
vehicle's painted surfaces,
the paint finish can be
damaged. Be careful not to
spill brake fluid on the
vehicle. If you do, wash it off
immediately.
Refer to the replacement number
shown on the original battery label
when a new battery is needed. See
for battery location.
Battery posts, terminals, and
related accessories contain lead
and lead compounds, chemicals
known to the State of California to
cause cancer and reproductive
harm. Wash hands after handling.