Buick 2005 Century - Manual (Page 242)

4. Fill the radiator with the
proper DEX-COOL ®
coolant mixture,
up to the base of the
filler neck. See Engine
Coolant on page 5-22
for more information
about the proper
coolant mixture.
If a stream of coolant is coming from an air bleed
valve, close the valve. Otherwise, close the
valves after the radiator is filled.
5. Rinse or wipe any spilled coolant from the engine
and the compartment.
6. Then fill the coolant recovery tank to the COLD
mark on the coolant recovery tank.
7. Put the cap back on the coolant recovery tank,
but leave the radiator pressure cap off.
5-32