Service and maintenance
90 Cooling system
Cooling system
Coolant
The cooling system is either filled with Volvo Coolant VCS or Volvo
Coolant. To avoid damage to engine and cooling system it is very
important to continue using the same coolant, when topping up or
changing, as the system was filled with beforehand.
IMPORTANT! To avoid damage to engine and cooling system
different coolants or corrosion protection must not be mixed.
To be able to differentiate between the coolants apply the follow-
ing:
The cooling system is filled with Volvo Coolant VCS if
– it is yellow
– there is a decal at the filling point with the text “Volvo Coolant
VCS” (see figure).
The cooling system is filled with Volvo Coolant if
– it is green
– if the above mentioned decal is not positioned at the filling
point.
If concentrated coolant and clean water (see page 109) are used,
the table below shows the approximate amount of concentrated
coolant that is required to achieve freeze protection. The amount
of concentrated coolant must never be less than 40 % of the total
mixture.
If there are doubts as to the quality of the water, use ready-mixed
coolant.
IMPORTANT! If ready-mixed coolant is used, it is very impor-
tant that the correct kind is used. Damage to engine and
cooling system may be caused if different kinds of coolant
are mixed.
Take care of filters/oils/liquids in an environmentally safe way,
see page 76.
Check the coolant level
Check coolant level every 10 operating hours.
NOTE! Check the coolant level only after the engine has
cooled down.
Once the cooling system has cooled down the coolant level must
be between the FULL (MAX) and LOW (MIN) marks in the coolant
compensation tank (7).
Freeze protection down
to
Mixed-in amount of concentrated coolant
–25 °C (–13 °F) 40 %
–35 °C (–31 °F) 50 %
–46 °C (–51 °F) 60 %
1020820
11445056
1011210
1011335
7
FULL (MAX)
LOW (MIN)
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