Volvo 240 1991 Owner's Manual page 111

Volvo 1991 240 Model
Changing coolant
Every two years or 30,000 miles (48,000 km) the cooling system should be drained, flushed and refilled.
Remove the expansion tank cap. Open the drain cock on right side of the engine block and disconnect
the lower radiator hose.
Fill coolant through the expansion tank.
The heater controls should be fully open when draining and filling.
Add coolant until the level is up to the MAX mark or slightly above.
Start engine and run until hot. Check the cooling system connections for tightness. Also re-check the
coolant level. Capacity: 9.9 US qts. = 9.4 liters (manual transmission models); 9.7 US qts = 9.2 liters
(automatic transmission models)
Cooling system, hoses and connections
Check all cooling system hoses and connections for defects or deterioration of hoses and loose clamps or
fittings.
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