Mitsubishi S6B Service Manual

6-1
Chapter 6 COOLANT
Note: In this operation manual, the word "coolant" represents the liquid combined water and LLC.
Recommended water for coolant
Use soft water for the engine cooling system. The water quality must meet the requirements in the Table below.
Basically, the water quality should be within the recommended value, however, up to the limit is acceptable.
Note: Figures in parentheses are the standard value. In addition to the items specified above, turbidity is specified to
be below 15 mg/liter.
Long life coolant (LLC)
Be sure to use Mitsubishi genuine long life coolant (LLC) "GLASSY long life coolant (Ethylene glycol type)" or "PG
GLASSY long life coolant (Non-amine type)" as coolant. When using other brand LLCs by necessity, be sure to use
the LLC that meets the Mitsubishi specification. Mitsubishi heavy industries, Ltd. disclaim the warranty claim con-
cerning malfunctions caused by the use of LLC that does not meet the following specification.
Genuine LLC
Mitsubishi Heavy Industries, Ltd. recommends the use
of our genuine long life coolant "GLASSY long life
coolant (Ethylene glycol type)", and Eco-friendly prod-
uct "PG GLASSY long life coolant (Non-amine type)",
which are most appropriate coolant for Mitsubishi die-
sel engine.
Fig. 6-1 GLASSY - LLC
Table 6-1 Water quality standards
Item
Chemical
symbol
Unit
Recommend
value
Limit value
Main adverse effect
Corrosion
and rust
Scale forma-
tion
PH (25 °C [77 °F]) - - 6.5 to 8.0 6.5 to 8.5 ○○
Electrical conductivity
(25°C [77°F])
- mS/m < 25 < 40 ○○
Total hardness CaCO
3 ppm < 95 < 100 - ○
M alkalinity CaCO
3 ppm < 70 < 150 - ○
Chlorine ion Cl
-
ppm < 100 < 100 ○ -
Sulfuric acid ion SO
4
2-
ppm < 50 < 100 ○ -
Total iron Fe ppm < 1.0 < 1.0 - ○
Silica SiO
2 ppm < 30 < 50 - ○
Residue from evapo-
ration
-
ppm < 250 < 400 - ○
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.

Mitsubishi S6B Specifications

General

Brand	Mitsubishi
Model	S6B
Category	Engine
Language	English