1.4.3 Mixture ratio:
Caution
Only distilled water may be used for mixing. Tap or well wa-
ter does not have the required quality to ensure the effec-
tiveness of coolant.
Frost protection to
Coolant additive G 12+
and G 12++
Water
-25 °C
approx. 40%
approx. 60%
-35°C
approx. 50%
approx. 50%
-40°C
approx. 60%
approx. 40%
1)
Only use distilled water.
Note
◆
Coolant additives G 12+ and G 12++ prevent frost and cor-
rosion damage, limescale and also raise the boiling point.
Therefore, the cooling system must be filled all year round
with frost and corrosion protection additives.
◆
Because of its higher boiling point, the coolant improves en-
gine reliability under heavy loads, particularly in countries
with tropical climates.
◆
The coolant concentration must not be reduced by adding
distilled water even in the warm season or in hot countries.
The antifreeze portion must be at least 40%.
Industriemotoren - Industrial Engines 2009
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Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
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1 Removing and installing parts of cooling system
283