Case WX145 Operator's Manual page 197

SECTION 4
COOLANT TOP UP
The coolant must consists in a mixture of 50% of
distilled water and 50% of antifreeze.
This mixture offers not only a antifreeze protection
up to -30 / -35 °C (-22 °F / -31 °F), but it protects
also the cooling and heating system from corrosion.
It prevents also the formation of limestone and
increases the boiling point of the cooling system.
Because of this, even during hot season and in hot
countries, coolant has not to be diluted with water.
NOTE: the additive quantity to be added to coolant
should be about 50%.
If for climate reasons a strong antifreeze is required
(for instance in Sweden, Norway, Finland), the anti-
freeze rate can be increases, but only up to 60%
(protection until about -40 °C (-40 °F)).
Otherwise, the antifreeze protection decreases and
the cooling effect gets worse (less radiating effect).
Before performing any top up or additive change,
ask the After-sales Service about the specifications
of the required additive allowed for your machine.
First of all mix the components in a clean container
and then pour the mixture into the cooling system. If
the mixture components are poured into the cooling
system one after the other, it is not possible to
obtain the correct mixture ratio. There is also the
possibility that components do not mix together in
the correct way.
NOTE: do not use not authorized additives. The cor-
rosion produced by this improper use, can cause
leaks in the cooling system and serious damages to
the engine.
COOLANT LEAKS
Leaks of coolant leads to suspect, first of all, to the
lack of tightness. In such a case, have the cooling
system immediately checked by the After-sales
service. The only coolant top up is not sufficient.
If the system is correctly tight, leaks may be found
only if the coolant overheats and boils and because
of this it is ejected out of the system under pressure.
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