Operation Manual

Service plan, maintenance 187
Anti-freeze and corrosion protection
Before the start of the cold weather season,
have the coolant checked by a workshop
for correct concentration. The amount of
anti-freeze m ust provide protection down
to approx. –28 °C. If the anti-freeze
concentration is too low, this reduces
protection from freezing and corrosion.
Top up anti-freeze if necessary.
If coolant loss is topped up with
demineralised w ater, have anti-freeze
concentration checked and more
anti-freeze added as necessary.
Picture no: s0013655.tif
Coolant level
Hardly any losses occur since the cooling
system is sealed and it is thus rarely
necessary to top up the coolant.
The coolant level in the expansion tank
should be betw een the MIN and MA X
marks when the sy ste m is cold. It rise s at
engine operating tem perature and drops
again when the engine cools down.
If the level falls below the MIN mark, the
coolant must be rep lenished.
Top up with a mix of 56% demineralised
wate r a nd 44% anti-fre eze specified for use
with your vehicle.
Do not use tap water, alcohol or methanol
anti-freeze to top up coolant level.
In e xtrem ely cold conditions, use a mix of
50% anti-fre eze specified for use with your
vehicle and 50% demineralised water.
After topping up, have the anti-freeze
concentration checked and anti-freeze
added if necessary. Elimina te the cause of
the coolant loss. Consult a workshop.
When closing, tighten coolant filler cap as
far as it will go.
9 Wa rnin g
Allow engine to cool down before
removing coolant filler cap. If steam is
visible, move away from the vehicle until
the engine is cool.
Remove filler cap carefully so that
pressure can escape slowly, otherwise
there is a risk of scalding.