Saturn 2008 Aura - Manual (Page 277)

Checking Coolant
The engine coolant surge tank is located in the rear of
the engine compartment.
See Engine Compartment Overview on page 5-14 for
more information on location.
{ CAUTION:
Turning the surge tank pressure cap when the
engine and radiator are hot can allow steam
and scalding liquids to blow out and burn you
badly. Never turn the surge tank pressure
cap — even a little — when the engine and
radiator are hot.
The vehicle must be on a level surface. When your
engine is cold, the coolant level should be at the
FULL COLD mark or slightly higher.
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