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GAMMA SERIES ENGINES OpERATORS' hANdbOOk
4.3 COOlANT SpECIfICATION
The quality of coolant used affects the efficiency and life of the cooling system.
The recommendations in the table below will help to maintain the cooling system
in good condition and to protect it against frost and/or corrosion.
COOLANT SPeCIFICATION
Description
Ethulene (% volume)
Water (% volume)
Solidifying Point (
°
C)
Antifreezing Fluid
60
40
-55
55
45
-40
50
50
-30
40
60
-22
• If possible, use clean soft water in the coolant mix.
If an antifreeze mixture other than that recommended by Lister Petter Power
Systems is used, it must be ethanediol (ethylene glycol) based with a corrosion
inhibitor. It is recommended that the corrosion inhibitor is of the sodium nitrite/
sodium benzoate type. The antifreeze mixture must be an efficient cool ant at all
ambient temperatures and it must provide protection against corrosion.
It must also have a specification at least as good as the requirement of the
standard BS6580: MOD AL39. Lister Petter Power Systems antifreeze exceeds the
requirements of this standard. The quality of antifreeze coolant must be checked
at least once a year, for example, at the beginning of the cold period. The coolant
must be renewed every two years. The antifreeze mixture must contain equal
quantities of antifreeze and water. Concentrations of more than 50% antifreeze
must not be used as this can affect the performance of the coolant adversely.
When frost protection is not necessary, it is still an advantage to use an approved
antifreeze mixture because this gives protection against corrosion and also raises
the boiling point of the coolant.
CAuTION
Failure to follow the correct coolant specification and procedures may lead to
damage by frost or corrosion.
If an antifreeze mixture is not used, add the correct mixture of corrosion inhibitor
to the water. Renew the mixture of water and corrosion inhibitor every six months
or check it according to the inhibitor manufacturer's recommendations.
CAuTION
Certain corrosion inhibitor mixtures can cause damage to some engine
components. It is recommended that you consult the service department at
Lister Petter Power Systems if a corrosion inhibitor is to be used.
Summary of Contents for GW3
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