Coolant. Mixture
WARNING! All glycol is hazardous and harmful to
the environment. Do not consume!
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 protects the engine against internal cor-
rosion, cavitation and frost damage down to -28 °C
(-18°F). (Using 60 % glycol lowers the freezing point to
-54 °C (-65°F)). Never mix more than 60 % concentrate
(Volvo Penta Coolant) in the cooling liquid, this will give
reduced cooling effect and increase the risk of over-
heating, and will give reduced freezing protection.
IMPORTANT! Coolant must be mixed with pure
water, use distilled - de-ionized water. The wa-
ter must fulfill the requirements specified by Volvo
Penta, see “Water quality”.
IMPORTANT! It is extremely important that the
correct concentration of coolant is added to the
system. Mix in a separate, clean vessel before
adding into the cooling system. Ensure that the
liquids mix properly.
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. ASTM D859) ............................... < 20 mg SiO
2
/l
Iron (acc. ASTM D1068) ............................... < 0.10 ppm
Manganese (acc. ASTM D858) ..................... < 0.05 ppm
Conductivity (acc. ASTM D1125) .................. < 500 µS/cm
Organic content, COD
Mn
(acc. ISO8467) ....... < 15 mg KMnO
4
/l
71
Maintenance. Freshwater system
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