1996 Buick Riviera Owner's Manual - Page 254

Power Steering Fluid NOTICE: Your radiator capis a 15 psi (105 kPa) pressure-type cap and must be tightly installed to prevent coolant loss and possible engine damage from overheating. Be sure the arrows on the cap line up with the overflow tube on the radiator filler neck. When you replace your radiator pressure q , a General c Motor's capis recommended. Thermostat Engine coolant temperature controlled by a is tbemostat in the engine coolant system. thermostat 'stops the The flow of coolant through the radiator until coolant the reaches a preset temperature. When yo-u replace thermostat, a General Motor's your thermostat is recommended. 6-25