Buick Enclave 2008 Owner's Manual page 331

How to Add Coolant to the Coolant
Recovery Tank
Notice: This vehicle has a specific coolant fill
procedure. Failure to follow this procedure could
cause your engine to overheat and be severely
damaged.
If you have not found a problem yet, check to see
if coolant is visible in the coolant recovery tank.
If coolant is visible but the coolant level is not at or
above the FULL COLD mark, add a 50/50 mixture of
clean, drinkable water and DEX-COOL
coolant recovery tank, but be sure the cooling system,
including the coolant recovery tank pressure cap, is cool
before you do it. See Engine Coolant on page 5-22 for
more information.
5-30
®
coolant at the
CAUTION:
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Steam and scalding liquids from a hot cooling
system can blow out and burn you badly. They
are under pressure, and if you turn the radiator
pressure cap — even a little — they can come
out at high speed. Never turn the cap when the
cooling system, including the radiator pressure
cap, is hot. Wait for the cooling system and
radiator pressure cap to cool if you ever have
to turn the pressure cap.