Pontiac 2007 Torrent Owner's Manual page 367

3. Fill the coolant surge tank with the proper
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DEX-COOL coolant mixture, to the COLD
FILL line.
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.
By this time, the coolant level inside the
coolant surge tank may be lower. If the level is
lower, add more of the proper DEX-COOL
coolant mixture to the coolant surge tank until
the level reaches the COLD FILL line.
5. Then replace the pressure cap. Be sure the
pressure cap is hand-tight.
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