1996 Buick Century Owner's Manual

How to Add Coolant to the RadiatorrI NOTICE:Your engine has a specific radiator fill procedure.Failure to follow this procedure could cause yourengine to overheat and be severely damaged.2. Then keep turningthe pressure cap, butnow push down as youturn it. Remove thepressure cap.1. You can remove theradiator pressure capwhen the coolingsystem, including theradiator pressure cap andupper radiator hose, isno longer hot.,A CAUTION:You can be burned if you spill coolant on hotengine parts. Coolant contains ethylene glycoland it will burn if the engine parts are hotenough. Don’t spill coolant on a hot engine.Turn the pressure cap slowly counterclockwise untilit first stops. (Don’t press down while turning thepressure cap.)If you hear a hiss, wait for that to stop. A hiss meansthere is still some pressure left.5-20