6-6
Chapter 6 COOLANT
Maintenance of LLC
Replacement Intervals of LLC
When a coolant mixed with the LLC recommended by our company is used, replace coolant every 8000 hours or 2
years, whichever comes first.
LLC Concentration
Keep the LLC concentration of 30 % (GLASSY) and 40 % (PG GLASSY) on any temperature conditions. LLC of
less than 30 % concentration does not provide sufficient corrosion protection. If the LLC concentration is lower than
10 %, it may accelerate corrosion.
When adding coolant, do not add plain water. Always use coolant with the same LLC concentration.
Note: (a) If the outside air temperature is -30°C [-22°F] or lower, use "GLASSY."
(b) The concentration above is based on Mitsubishi Heavy Industries, Ltd. genuine LLC "GLASSY long life
coolant (Ethylene glycol type)" or "PG GLASSY long life coolant (Non-amine type)."
For determining the accurate LLC concentration, refer to the instructions for the LLC used.
Should coolant or LLC be accidentally swallowed, induce vomiting immediately and seek medical attention. If LLC
should enter eyes, flush immediately with plenty of water and seek medical attention.
LLC is toxic. Never dispose of coolant containing LLC drained from engine into regular sewage. For disposal of
used coolant, consult LLC distributor.
Be sure to renew LLC (coolant) at the intervals specified in this manual.
Failure to renew LLC may cause malfunctions due to performance degradation of preventing rust and cavitation.
Table 6-3 Recommended LLC Concentration
Item
Type
Appear-
ance
Lowest ambient temperature
-10°C [14°F]
or above
-20°C [-4°F]
or above
-30°C [-22°F]
or above
-45°C [-49°F]
or above
LLC concentration
(%)
GLASSY
Green
30
40
50
60
PG GLASSY
Red
40
55
70
-