Volvo 9700 USCAN, Operating Instructions Manual

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18 Maintenance
Winterization
If the vehicle is to be parked in zero or
sub-zero temperatures, it is imperative that
the tanks are completely drained.
During winter months ( temperatures below
0 °C or 32 °F ), you should place non-toxic
propylene glycol in both the water and the
septic tanks, in order to prevent freezing.
Note:
(1) Use the proportion of propylene glycol
recommended by the supplier. The capacity
of the tanks are
110 liters for the water tank
and 100 liters for the septic tank.
(2) No warranty claims will be accepted on
any winter damaged parts.
CAUTION
Do not use ethylene glycol instead of
propylene glycol.
Ethylene glycol can damage some rubber
components.
WARNING
Do not use automotive antifreeze instead
of propylene glycol.
The automotive antifreeze uses to be toxic,
and can cause health problems.