Mitsubishi S12R Service Manual

6 COOLANT
Mitsubishi Diesel Engine S12R OPERATION & MAINTENANCE MANUAL
113
Pub. No. 291Y1-40720 Revision: 5
Maintenance of LLC
LLC Concentration in Coolant -
Check
Be sure to drain a small amount of coolant and
check the LLC concentration every 4000 service
hours for the continuous use engine, and every six
months for the emergency use engine.
"
LLC Concentration in Coolant - Measure" (→ Page
114)
Replacement Period
Change the coolant every 8000 hours or 2 years,
whichever comes first for the continuous use
engine. For the emergency use engine, be sure to
change the coolant once every 2 years.
Coolant - Mix
1 Check the LLC concentration in
coolant "
LLC Concentration
(Genuine LLC)" (→ Page 113).
2 Check the quantity of coolant to be
refilled.
• When replacing, check the specified
quantity of coolant. "
SPECIFICATIONS -
CHECK" (→ Page 12)
• When refiling, check with the scale on the
tank.
• Refill coolant into the engine after
mixing. Do not refill only water or
LLC.
• If coolant is refilled without proper
stirring, partially contrasting density
of the LLC concentration may occur,
which interferes with the sufficient
anti-corrosion and cooling properties.
3 Prepare a vessel for mixing and pour
in water "
Water to Be Used" (→ Page
111).
4 In accordance with the LLC
concentration checked in Step 1,
add LLC "
LLC to Be Used" (→ Page
112).
5 Check the LLC concentration in
mixed coolant. "
LLC Concentration
in Coolant - Measure" (→ Page 114)
6 Refill the mixed coolant into the
engine. "
Coolant - Replace" (→ Page
156)
LLC Concentration (Genuine
LLC)
The concentration of LLC required for anti-freeze is
determined by the ambient minimum temperature.
Be sure to follow the range shown in the following
table.
Do not use LLC after the
recommended storage expiration
date.
* Otherwise, the devices may be damaged.
Keep LLC to be the specified
concentration.
* If LLC concentration is low, it may cause
corrosion of the radiator or heat exchanger.
* If LLC concentration is high, it may cause
damage to the devices or overheat due to the
seized engine parts.
Table 6-2 LLC Concentration
Type
External
appearance
Ambient temperature
down
to -10°C
[14°F]
down
to -20°C
[-4°F]
down
to -30°C
[-22°F]
down
to -45°C
[-49°F]
GLASSY Green 30% 40% 50% 60%
PG
GLASSY
Red 40% 55% 70% 90%

Mitsubishi S12R Specifications

General

Brand	Mitsubishi
Model	S12R
Category	Engine
Language	English