C
Only use Volvo Coolant VCS when topping up or changing coolant. To avoid damage to engine and cooling
system, different coolants or corrosion protection must not be mixed.
When using concentrated Volvo Coolant VCS and clean water, the mixture should contain 40–60% concentrated
coolant and 60–40% clean water. The amount of concentrated coolant must never be less than 40% of the total
mixture, see table below.
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-25 °C (-13 °F) 40%
-35 °C (-31 °F) 50%
-46 °C (-51 °F) 60%
The concentrated coolant must not be mixed with water that contains a high degree of lime (hard water), salt or
metals.
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Total number of solid 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 material, COD-Mn < 15 mg/litre
If there is any doubt about the water quality, use ready-mixed Volvo Coolant VCS, which contains 40%
concentrated coolant. Do not mix with any other ready-mixed coolants since this may result in engine damage.
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