Maintenance
34
Coolant. Mixing
WARNING!
All glycol is hazardous and pollutes
the environment. Do not swallow it!
Glycol is flammable.
IMPORTANT!
Ethylene glycol must not be
mixed with other types of glycol.
Mix:
40% “Volvo Penta Coolant” (conc. coolant)
60% water
This mixture prevents against internal corrosion, cavi-
tation and frost bursting down to about -28°C (-18.4°F).
(at 60% glycol concentration, the freezing point is low-
ered to -54°C (-65.2°F)). Never mix more than 60% con-
centrate (Volvo Penta Coolant) in the coolant. This will
give reduced frost protection and poorer cooling effect,
with a consequent risk of overheating.
IMPORTANT!
The coolant must be mixed with
pure water, use distilled – de-ionized water. The
water must comply with the requirements speci-
fied by Volvo Penta, please refer to “Water qual-
ity”.
IMPORTANT!
It is extremely important that the
correct concentration of coolant is put in the sys-
tem. Mix in a separate clean vessel before filling
the cooling system. Make sure that the liquids
mix.
Water quality
ASTM D4985:
Total solid particles .............................. < 340 ppm
Total hardness: ..................................... < 9.5° dH
Chloride ................................................. < 40 ppm
Sulfate ................................................... < 100 ppm
pH value ................................................ 5.5–9
Silica (acc. to ASTM D859) ................. <20 mg SiO
2
/l
Iron (acc. to ASTM D1068) .................. < 0.10 ppm
Manganese (acc. to ASTM D858) ....... < 0.05 ppm
Conductivity (acc. to ASTM D1125) .... < 500 µS/cm
Organic content, COD
Mn
(acc. to ISO8467) ................................. <15 mgKMnO
4
/l
Summary of Contents for TAD941GE
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