1996 Oldsmobile Aurora Owner's Manual - Page 269

You can be burned if you spill coolant on hot engine parts. Coolantcontains ethylene glycol, and it will burn if the engine parts are hot enough. Don't spill coolant on hot engine. a When replacing the pressure cap, make sure it is tight. Thermostat Adding Coolant If you need more coolant, add the proper mixat the surge tank, but only when the engine is cool. Engine coolant temperature is controlled by a thermostat in the engine coolant system. The thermostat stops the flow of coolant through the radiator until the coolant reaches a preset temperature. When you replace your thermostat, an AC@thermostat is recommended.