1996 Cadillac Seville Owner's Manual - Page 282

Adding Coolant Surge Tank Pressure Cap If you need more coolant, add the propermix at the surge tank, but only when theengine is cool. I A CAUTION: You can be burned if you spill coolanton hot engine parts. Coolant contains ethylene glycol, and it will burn if the engine parts arehot a enough. Don't spill coolant on hot engine. When replacingthe pressure cap, make sure it is tight. I NOTICE: . - The surge tank cap a 15 psi (105 kPa) is pressure-type cap and must tightly installed to be prevent coolant loss and possible engine damage from overheating. Be sure the arrows the on cap lineup. ' If the surge tank pressure cap needs to be replaced, a General Motors cap is recommended. Thermostat 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 apreset temperature. If your thermostat needs to be replaced, a General Motors thermostat is recommended. 6-23