2.
The concentration of Non-Amine Engine Coolant (AF-NAC) is as shown in the following table.
Coolant density table
Min. atmospheric tem-
perature
 °C
-10 or
more
-15 -20 -25 -30 -35 -40 -45 -50
Density ( %) 30 36 41 46 50 54 58 61 64
The supplied Non-Amine Engine Coolant (AF-NAC) is already diluted.
In this case, fill up the tank with pre-diluted fluid. (Never dilute the Non-Amine Engine Coolant with ordinary
water.)
Note 5: DEF freezes at -11 °C. If thawing is necessary, DEF system is automatically heated and thawed after
the engine is started.
RECOMMENDED BRANDS AND QUALITIES OTHER THAN KOMATSU
GENUINE OILS
When using commercially available oils other than Komatsu genuine oil, consult your Komatsu distributor.
RECOMMENDED FUEL, COOLANT, AND LUBRICANT REPLACEMENT PARTS
7-8
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