Buick REGAL 1997 Manual page 260

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8. Start the engine and let it run until you can feel the

upper radiator hose getting hot. Watch out for the

engine fans.

9. By this time, the coolant level inside the radiator

filler neck may be lower. If the level is lower, add

more of the proper DEX-COOL@ coolant mixture

through the filler neck until the level reaches the

base of the filler neck.

10. Then replace the pressure cap. At any time during

this procedure if coolant begins to flow out of the

filler neck, reinstall the pressure cap. Be sure the

arrows on the pressure cap line up like this.

1. Check the coolant in the recovery tank. The level in

the coolant recovery tank should be at the HOT

mark when the engine is hot or at the COLD mark

when the engine is cold.

1997 century