CHECKING AND REFILLING –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
3.37
TIPS AND MAINTENANCE
The cooling system is filled at the factory
with a permanent coolant which is not
changed. The coolant consists of water
and a 40% concentration of our coolant
additive
G 12
(glycol-based anti-freeze
with anti-corrosion additives). This mix-
ture not only gives the necessary frost
protection down to –25°C but also pro-
tects the alloy parts in the cooling system
against corrosion. In addition it prevents
scaling and significantly raises the boil-
ing point of the coolant.
The concentration of the coolant therefore
must not be reduced in the summer or in
warm countries, by topping up with plain
water.
The coolant additive proportion
must be at least 40%.
If greater protection against frost is
required, the proportion of
G 12
additive
can be increased, but
only up to 60%
(frost protection to approx. –40°C), other-
wise the anti-freeze protection is reduced
and furthermore the cooling effect is
impaired.
Vehicles for export to cold countries (e.g.
Sweden, Norway, Finland) usually have
frost protection down to –35°C (50%
G 12
)
approximately.
Only our coolant additive
G 12
(marked
on container) may be used. The additive
can be obtained from Technical Service
Centres.
Other additives can be very detrimen-
tal to the anti-corrosion effect in par-
ticular.
The subsequent corrosion damage
can lead to coolant loss resulting in
major engine damage.
Note
Only our coolant additive G 12
(marked on container) may be used.
The coolant can be obtained from
Technical Service Centres.
When refilling please note:
The G 12 coolant additive must not be
mixed with other additives (not even
G 11).
If this is the case, the coolant must be
changed immediately!
Otherwise, serious functional failures
or damage to the engine could result!
Cooling system
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