Pontiac 1993 Sunbird Owner's Manual page 165

. . I
Service Appearance Care
When to Check and What to Use
Refer to the Maintenance Schedule to
determine how often you should check
the fluid level in your clutch master
cylinder reservoir and for the proper
fluid. See
Owner Checks and Services
and Recommended Fluids and
Lubricants in the Index.
How to Check
If you can see fluid in the reservoir, the
level is acceptable.
Engine Coolant
The following explains your cooling
system and how to add coolant when it
is low. If you have a problem with
engine overheating, see Engine
Overheating in the Index.
164
The proper coolant for your Pontiac will:
Give freezing protection down to
Give boiling protection up to 262°F
Protect against rust and corrosion.
Help keep the proper engine
Let the warning lights work as they
What
to
Use
Use a mixture of one-half clean water
(preferably distilled) and one-half
antifreeze that meets "GM Specification
1825-M," which won't damage aluminum
parts. You can also use a recycled
coolant conforming to GM Specification
1825-M with a complete coolant flush
and refill. If you use this mixture, you
don't need to add anything else.
-34°F (-37°C).
(128°C).
temperature.
should.
NOTICE:
If you use an improper coolant mix,
your engine could overheat and be
badly damaged. The repair cost
wouldn't be covered by your
warranty. Too much water in the
mix can freeze and crack the
engine, radiator, heater core and
other parts.