Wacker Neuson Telehandler TH412 Operator's Manual page 292

7 Maintenance
Checking/adding coolant
Fig. 145
Check the coolant level regularly. The check marks
"FULL" and "LOW" are located on the side of the reservoir
(Fig. 145).
Ensure that a sufficient amount of antifreeze is always
added to the coolant. In summer, the antifreeze protects
against internal corrosion in the engine and radiator.
Ensure a sufficient amount of coolant in the cooling circuit
at all times.
7-38
Checking the antifreeze mixture
Fig. 146
The antifreeze prevents the coolant from freezing at
temperatures below the freezing point and protects the
engine block and radiator against internal corrosion.
Under normal conditions, an antifreeze concentration that
offers protection for temperatures down to −20 to −30 °C
is sufficient. The antifreeze concentration can be checked
with an antifreeze tester (Fig.
BA TH412 * 06/2017 * 4512_7-9_Kuehlsystem_en.fm
146).