Service and maintenance
Cooling system 175
Changing coolant
IMPORTANT! Do not mix different coolants or corrosion pro-
tection as this may result in engine damages, see page 174.
Change the coolant every 6000 hours or every fourth year if
the system is filled with Volvo Coolant VCS.
Change the coolant every 2000 hours if the system is filled
with Volvo Coolant.
Change the coolant every 3000 hours or every second year if
the system is filled with Volvo Coolant and equipped with a
coolant filter.
Draining coolant
1 Remove the radiator bottom cover and put a container under
drain cock (B).
2 Loosen radiator cap (A)
3 Open drain cock
(B).
NOTE:
The cooling system does not become safe against frost even
after draining. There may be pockets of water left.
A
WARNING!
Take care of waste oil/liquids in an environmentally safe
way!
Flushing
1 After draining, close cock (B).
2 Refill through (A) with clean tap water.
3 Start up engine and run at low idle for about 10 minutes.
4 Stop the engine and drain the water.
Filling coolant
The cooling system capacity when changing is approx. 27.5 liters
(US 7.3 gal)
1 After flushing, close cock (B) and remove cap (A).
2 Fill the recommended coolant through (A).
3 Run the engine at low idle for about 5 minutes.
4 Stop the engine and refill the coolant to the proper level on the
sight gauge.
5 Install the cap.
IMPORTANT
Never fill cold coolant in a warm engine. This can cause
cracking in the cylinder block and cylinder head.
Failure to change coolant will cause clogging of the cooling
system and the risk of the engine seizing.
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