Changing the coolant – Saab 2001 9-3 User Manual

Page 199

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199

Car care

The corrosion-inhibiting properties of the
coolant deteriorate over time, but coolant
approved by Saab can be used for
year-round protection. Change the coolant
as specified in the service program (page
239) a
nd use only coolant approved by
Saab – other makes may need changing
more frequently and may damage the sys-
tem.

Changing the coolant

(Usually carried out as part of the Saab
original service by an authorized Saab
dealer)

1 If the engine is hot, loosen the expan-

sion-tank filler cap a little to release the
pressure. Leave the cap in place.

2 Fit a suitable piece of hose onto the

nipple of the drain cock. Let the hose dis-
charge into a receptacle under the radi-
ator and open the drain cock, which is
located on the inside of the radiator
facing the engine bay.

3 Remove the filler cap on the expansion

tank.

4 In a couple of minutes the system will be

empty. Close the drain cock.

5 Mix antifreeze and water in a suitable

container. Use only Saab-approved
coolant.

6 Add the coolant slowly to the expansion

tank. This will take about two minutes,
as the air needs time to escape.

7 Screw the expansion-tank cap on and

run the engine to normal temperature.
Top up with coolant until the level is just
under the "KALT – COLD" mark on the
tank.

8 Check the coolant again after a few days

and top up as necessary.

NOTE

Always mix the antifreeze with the
appropriate volume of water before
adding it to the cooling system.

If pure antifreeze is added, the engine
could still freeze and be damaged. This is
because the antifreeze will not mix
properly with the coolant before the
thermostat has opened to allow full
circulation.

IB893

Radiator drain cock

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