Specifications
Coolant 109
Coolant
Use the same coolant as the system was filled with previously. To avoid damage to engine and cooling system,
different coolants or corrosion protection must not be mixed.
When using concentrated coolant and clean water, the mixture must contain 40–60 % concentrated coolant and
60–40 % clean water. The amount of concentrated coolant must not be less than 40 % of the total mixture, see
table below.
The concentrated coolant must not be mixed with water that contains a high degree of lime (hard water), salt or
metals.
The clean water for the cooling system must also meet the following requirements:
If there are doubts as to the quality of the water, ready-mixed coolant must be used. To avoid damage to the eng-
ine, different kinds of ready-mixed coolant must not be mixed.
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 %
Description Value
Total number of soild particles < 340 ppm
Total hardness < 9.5 ° dH
Chloride < 40 ppm
Sulphate < 100 ppm
pH value 5.5–9
Silica < 20 mg SiO
2
/litre
Iron < 0.10 mg Fe/litre
Manganese < 0.05 mg Mn/litre
Electrical conductivity < 500 μS/cm
Organic content, COD-Mn < 15 mg/litre
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