MAINTENANCE
7-72
G. Cooling System
Coolant
Use fresh water or normal tap water as the coolant water.
Do not use strong acid or alkaline water. Use of the genuine
Hitachi Long-Life Coolant (LLC) mixed by 33 to 50 % is
recommended.
If the air temperature is expected to fall below 0 °C (32 °F),
fill the cooling system with Long-Life Coolant (LLC) and soft
water mix. As a general rule, the ratio of LLC should range
between 33% and 50% as shown in the table below. If the
ratio is below 33%, the system may develop rust, and if it is
above 50%, the engine may overheat.
LLC Mixing Table
Air
temperature
°C (°F)
Mixing ratio
%
Coolant Capacity: 88.0 liter
(23.2 gallons)
LLC
liter (gallon)
Soft Water
liter (gallon)
-15 (5.0) 33 29.0 (7.7) 59.0 (15.5)
-20 (-4.0) 38 33.4 (8.8) 54.6 (14.4)
-25 (-13) 43 37.8 (10.0) 50.2 (13.2)
-30 (-22) 48 42.2 (11.1) 45.8 (12.1)
f
NOTE: To avoid water impurity and minerals, a premixed
coolant is recommended to use.
d
WARNING:
Antifreeze is poisonous; if ingested, it can cause
serious injury or death. Induce vomiting and get
emergency medical attention immediately.
When storing antifreeze, be sure to keep it in a
clearly marked container with a tight lid. Always
keep ANTIFREEZE out of the reach of children.
Be careful of fire hazards. LLC is specified as a
dangerous substance in the fire protection law.
If antifreeze is accidentally splashed into eyes, flush
with water for 10 to 15 minutes and get emergency
medical attention.
When storing or disposing of antifreeze, be sure to
comply with all local regulations.
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