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Coolant

Coolant


Coolant flow

The coolant consists of a mixture of 50% water and 50% Saab Original Coolant. Cooling system capacity is about 8.5 litres of coolant.

Thermostat closed

With the thermostat closed the coolant passes from the coolant pump - via a passage in the cylinder block - up through the cylinder head - via the throttle body (preheating) to the thermostat housing - through the lower outlet of the thermostat housing - through a hose to the heat exchanger - through the return hose from the heat exchanger - and back to the coolant pump.

All the coolant goes directly to the pump from the heat exchanger.

Thermostat normally open

With the thermostat normally open the coolant passes from the coolant pump - via a passage in the cylinder block - up through the cylinder head - via the throttle body (preheating) to the thermostat housing - and through the thermostat housing's two outlets. The coolant passing out through the lower outlet goes back to the coolant pump via the heat exchanger. The coolant passing through the thermostat's upper outlet goes directly to the radiator and from there to the coolant pump.

Thermostat fully open

The thermostat closes the lower outlet so that all the coolant passes through the radiator. No coolant flows through the heat exchanger.