1993 Chevrolet Corvette Owner's Manual - Page 269

Service & Appearance Care Adding Caalant-LT5 Enghe (CONT,) 2. Add the coolant mix to the coolant Coolant High Fill Reservoir Pressure Cap Engine coolant temperature is I controlled by a thermostat in the engine coolant system. The thermostat sfops the flow of coolant through the radiator until the .coolant reaches a preset temperature. When you replace your thermostat,a n AC* thermostat is recommended. high fill reservoir until the level reaches the base of the res&voir filler neck 3 With the pressure capstill removed, . run the engine until the upper radiator hose is hot. With the engine at idle, add coolanti again, if mx needed, to bring the level back up to the reservoir filler neck base. 4. Put on the pressure cap.When it's tight, the arrows on the cap should line up with the overflow tube on the reservoir filler neck. When you replace your coolant high fill reservoir pressure cap, AC@cap is an recommended.