Buick 2004 Regal Owner's Manual page 246

If a stream of coolant is coming from an air bleed
valve, close the valve. Otherwise, close the
valve after the radiator is filled.
5-38
4. After the engine cools,
open the coolant air
bleed valve. The bleed
valve is located on
the thermostat
housing.
5. Fill the radiator with the
®
proper DEX-COOL
coolant mixture,
up to the base of the
filler neck. See
Engine Coolant on
page 5-26 for more
information about the
proper coolant mixture.
6. Rinse or wipe any spilled coolant from the engine
and the compartment.
7. Replace the 3800 Series II V6 engine cover shield.
7.1. Remove the oil fill tube, with cap attached,
from the valve cover.
7.2. Insert the catch tab on the cover shield
under the bracket on the engine.
7.3. Place the hole in the cover shield over the
hole in the valve cover. Install oil fill tube and
cap by twisting clockwise.
7.4. If the vehicle has a supercharged engine,
install the nut in the center of the cover
shield.