MAINTENANCE
7-55
G. COOLING SYSTEM
Coolant
Use fresh water or normal tap water as a coolant. Do not use
strong acid or alkaline water. Use the coolant with genuine
Hitachi Long-Life Coolant (LLC) mixed by 30 to 50 %.
If the air temperature is expected to fall below 0 °C (32 °F),
fill the cooling system with an genuine Hitachi Long-Life
Coolant (LLC) and soft water mix. As a general rule, the ratio
of LLC should range between 30 % and 50 % as shown in
the table below. If the ratio is below 30 %, the system may
develop rust, and if it is above 50 %, the engine may over-
heat.
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