2000 Pontiac Sunfire Owner's Manual - Page 276
2000 Pontiac Sunfire Manual
Page 276 highlights
CAUTION: Turning the surge tank pressure cap when the engine and radiator are hot can allow steam and scalding liquids to blow out and burn you badly. Never turn the surge tank pressure cap -- even a little -- when the engine and radiator are hot. The vehicle must be on a level surface. When your engine is cold, the coolant level should be at the FULL COLD mark. If the low coolant light comes on and stays on, it means you're low on engine coolant. See "Low Coolant Light" in the Index. If you need more coolant, add the proper DEX-COOLR coolant mixture at the surge tank, but only when the engine is cool. Adding Coolant CAUTION: You can be burned if you spill coolant on hot engine parts. Coolant contains ethylene glycol, and it will burn if the engine parts are hot enough. Don't spill coolant on a hot engine. When replacing the pressure cap, make sure it is hand-tight. 6-26
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