1993 Oldsmobile Bravada Owner's Manual - Page 223

A Turning the radiator pressure cap when the engine and radiator are hot can allow steam and scalding liquids t blow out o and burn you badly. With the coolant recovery W, you will almost never have to add coolant at the radiator. Never turn the radiator pressure cap-even a little-when the engine and radiator are hot. Radiator Pressure Cap 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 reachesa preset temperature. When you replace your thermostat, an AC@thermostat is recommended. t i ; Add coolant mix at the recovery tank, but be careful not to spill it. (105 kPa) pressure-type cap 1 . must be tightly installed toprev coolant loss and possibleenginl damage from overheating. Be sure the arrows on the cap line w up m You can be burned if you spill coolant on hot engine parts. Coolant contains ethylene glycol, and it willburn if the engine parts are hot enough. Don't spill coolant on a hot engine. When you replace your radiator pressure cap, an AC5 cap is recommended. 221