Still RX70-40, Original Instructions Manual

Page: 350 / 392

5
Maintenance
Preserving operational readiness
WARNING
Risk of scalding!
Only open the coolant reservoir filler cap when the
engine has cooled down.
– Slowly open the coolant reservoir filler cap
(1) and release over pressure.
– Unscrew further and remove the cap.
– If necessary, top up the coolant up to the
marking plate in the coolant reservoir. For
information about the filling quantity in the
cooling system, see "maintenance data
table".
– For information about the correct concen-
tration of coolant, refer to the following chap-
ter.
– Screw the coolant reservoir filler cap (1)
back on tightly.
Concentration of the coolant additive
CAUTION
Risk of corrosion!
The percentage of coolant additive must always be
at least 40%, even if frost protection is not needed
in warmer climates.
If an increased level of frost protection is required
for climatic reasons, the percentage of coolant can
be increased to up to 60%.
The percentage of coolant additive must not exceed
60%, as otherwise the frost protection is reduced.
In addition, the cooling effect is also reduced.
Only use clean, softened water for the water per-
centage.
Frost protection
up to °C
Water percentage
%
Percentage of coolant additive
%
-25 60 40
-30 55 45
-35 50 50
-40 40 60
338 57348011850 EN - 02/2019 - 11