Coolant Surge Tank Pressure Cap - Chevrolet 2004 Malibu Owner's Manual

Adding Coolant
If you need more coolant, add the proper DEX-COOL
coolant mixture at the surge tank, but only when the
engine is cool. If the surge tank is empty, a special fill
procedure is necessary. See Engine Overheating
on page 5-27 and Cooling System on page 5-29.
CAUTION:
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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. Do not spill coolant on a hot engine.
5-26
When replacing the pressure cap, make sure it is
hand-tight.
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Coolant Surge Tank Pressure Cap

Notice: If the pressure cap is not tightly installed,
coolant loss and possible engine damage may occur.
Be sure the cap is properly and tightly secured.