Diesel Gen-set Operation Instructions
45
Table 7-1 Domestic long-life anti-freeze
Grade
Item
JFL-318 JFL-336
JFL-345
Content of ethylene
glycol (%)
33 50
56
Specific gravity
(15.6 )
℃
1.05 1.074
1.082
Boiling point
℃
104.5±1
108.5±1
110±1
Freezing point
℃
-18±1
-36±1
-45±1
Applicable minimum
air temperature
℃
-10 -26
-35
Note: do not only use water as the coolant.
Note: anti-freeze shall be stored at a dry and cool place and kept away from
bright sunlight.
1.2 Method for refilling of coolant
Slowly fill coolant into cooling system from filler on radiator until level of coolant in
radiator is 5cm away from filler, in order to bleed residual air in cooling system of
engine.
2. Refilling of oil
2.1 Oil selection
Owing to the fact that viscosity of engine oil depends on temperature to a large extent
and will reduce significantly with increasing of temperature, in order to ensure that
diesel engine can be operated in a safe and reliable way, please select the most
appropriate engine oil according to ambient temperature by referring to figure 7-1.
