1994 Buick Regal Owner's Manual - Page 227

A CAUTION: Turning the radiator pressure cap when the engine and radiator are hot can allow steam and scalding liquidsto blow out and burn you badly. With the coolant recovery tank, you will almost never haveto add coolant at the radiator. Never turn the radiator pressure cap even alittle when the engine and radiator are hot. Radiator Pressure Cap NOTICE: Your radiator cap is a 15 psi (105 kPa) pressure-type cap and must be tightly installed to prevent coolant loss and possible engine damage from overheating. Besure the arrows on the cap line up with overflow tube on the the radiator filler neck. When you replace your radiator pressure cap, an AC@ cap is recommended. -- -- Add coolant mix at the recovery tank, but be careful not to spill it. A CAUTION: You can be burned you spifl coolant on hot if 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. Thermostat Engine coolant temperatureis 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. 225