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Diesel engine coolant
Water quality
Use clean water as soft as possible to prepare the coolant. Mostly, drinking water
fulfils the desired requirements. Information on the quality of drinking water can be
obtained from the local waterworks or the responsible water supply company on
request.
If no information about the water quality or no suitable water is available, use distilled
or deionised water. Do not use seawater, brackish water, brines and industrial waste
water. Salts can enhance corrosion or form unwanted sediments.
The chemical values of the water used for mixing of coolants must be within the limits
given in the table below:
Water quality min max
alkaline-earth ions mmol/l 2.7
hardness °dH 15
chloride mg/l 80
chloride + sulphate mg/l 160
pH-value - 6.5 8.0
517 / 546
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