1998 Chevrolet Cavalier Owner's Manual - Page 240

Steam and scalding liquids from a hot cooling How toAdd Coolant to the Coolant system can blow out and burn badly. They you are under pressure, and if you turn the coolant Surge Tank If you haven't found a problem yet, but the coolant level surge tank pressure cap even alittle they turn the cap can come out at high speed. Never isn't at the FULL COLD mark, adda 50/50 mixture of when the cooling system, including coolant the clean water (preferably distilled) and DEX-COOL@ coolant at the coolant surge tank, but be sure the cooling surge tank pressure cap, is hot. Wait for the system, including the coolant surge tank pressure cap, is cooling systemand coolant surge tankpressure cool before you doit. (See "Engine Coolant" in the cap to cool if you ever have to turnthe Index for more information.) pressure cap. If there seems to be leak, with the engine check to no on, see if the electric engine cooling fan is running. If the it engine is overheating, the fan should be running. If isn't, your vehicle needs service. -- -- 5-18