Pontiac 1998 Firebird Owner's Manual page 234

2. Then keep turning the pressure cap, but now push
down as you turn it. Remove the pressure cap.
I
A
CAUTION:
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol,
aud it will burn if the engine parts are hot
enough. Don't spill coolant on a hot engine.
3. Fill with the proper DEX-COOL@ coolant mixture.
4.
Continue to fill the radiator up
to
the base of the
filler neck.
5. Rinse or wipe the spilled coolant from the engine
and compartment.
6 .
Start the engine and allow
it
to run in idle for
approximately four minutes. By this time, the
coolant level inside the radiator will be lower. Add
more of the proper mixture
through
the filler neck
until the level reaches the base of the filler neck.
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