17. Cooling and Lubrication System
Engine Coolant
The coolant used in cooling system is a mixture of 50%
distilled water and 50% ethylene glycol antifreeze. This
50:50 mixture provides the optimized corrosion
resistance and fine heat protection. The coolant will
protect the cooling system from freezing at temperature
above –30℃. If the vehicle will be operated at the
environmental temperature below –30℃, the mixing ratio
of coolant should be increased to 55% or 60% according
to the figure on the right.
Note:Use high quality ethylene glycol base antifreeze
and mixed with distilled water. Never mix an alcohol base
antifreeze and different brands of antifreeze;
The ratio of antifreeze should not be more than 60% or
less than 50%;
Do not use anti-leak additive;
Warning !
z DO NOT open radiator cap when the engine is still
hot. Or you may be injured by scalding fluid or
steam;
z Coolant is harmful. DO NOT swallow or stain your
skin or eyes with coolant. In case of accidental
swallow or stains, flush with plenty of water and
consult the doctor immediately.
z Keep coolant away from reach of children.
Inspection of Cooling Circuit
z Remove radiator cap① and connect tester ② to
filler.
Warning!
Do not open the radiator cap when the engine is still hot.
z Give a pressure of 120 kPa and check if the cooling
system can hold this pressure for 10 seconds.
z If the pressure drops during this 10 seconds, it
indicates that the there is leakage with the cooling
system. In this case, check the complete system
and replace the leaking parts or components.
Warning!
z When removing the radiator cap tester, put a rag on
the filler to prevent splash of coolant.
Warning!
z Do not allow a pressure to exceed the radiator cap
release pressure.
17-3
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