1998 Oldsmobile Aurora Owner's Manual - Page 239
1998 Oldsmobile Aurora Manual
Page 239 highlights
4. With the coolant surgetank pressure cap off, start the engine and let it run until you can feel the upper radiator hose getting hot.Watch out for the engine cooling fans. 5. Then replace the pressure cap. Be sure the pressure cap is tight. By this time, the coolant level inside the coolant surge tank may be lower. If the level is lower, add more of the proper mixture to the coolant surge tank until the level reaches FULL COLD. 5-23
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4.
With the
coolant
surge
tank pressure
cap off, start the
engine and let
it
run until you can feel
the upper
radiator hose getting
hot. Watch out
for
the
engine
cooling
fans.
5.
Then replace the pressure
cap.
Be
sure
the
pressure
cap is tight.
By
this time, the coolant
level
inside
the
coolant
surge tank may be lower.
If
the level
is
lower, add
more of the
proper
mixture
to
the
coolant surge tank
until the level reaches
FULL
COLD.
5-23