How To Add Coolant To The Radiator - Buick CENTURY 1999 Owner's Manual

How to Add Coolant to the Radiator

NOTICE:
Your engine has a specific radiator fill procedure.
Failure to follow this procedure could cause your
engine to overheat and be severely damaged.
Turn the pressure cap slowly counterclockwise until it
first stops. (Don't press down while turning the pressure
cap.) If you hear a hiss, wait for that to stop. A hiss
means there is still some pressure left.
1. You can remove the
radiator pressure cap
when the cooling
system, including the
radiator pressure cap and
upper radiator hose, is
no longer hot.
CAUTION:
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol
and it will burn if the engine parts are hot
enough. Don't spill coolant on a hot engine.
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2. Then keep turning the
pressure cap, but now
push down as you turn
it. Remove the
pressure cap.
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