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Operation
Cleaning/protective treatment
Risk of poisoning
There is a risk of poisoning if coolant is swal-
lowed.
Never swallow coolant.
Never store coolant in containers nor-
mally used for beverages.
Store coolant out of the reach of chil-
4
dren.
Drain off coolant when the engine is
cold (
page 92).
If a heater is connected to the cooling
system, open the regulating valves ful-
ly.
56
Degreasing
G
Fill the cooling system with a 5% solu-
tion of water and a mild alkaline clean-
er, e.g. "P3 Croni" (50 g cleaning agent
per litre of water).
Warm the engine up to approximately
80 °C (coolant thermostat starts to
open) at a moderate engine speed and
allow it to run for approximately 5 min-
utes longer.
Switch off the engine and allow it to
cool to approximately 50 °C.
Drain off the cleaning solution com-
pletely.
Immediately afterwards, fill the cooling
system with clean water, warm up the
engine, and drain off the water after
5 more minutes. Then repeat the pro-
cedure a second time.
Fill the cooling system with new cool-
ant (
page 93) and observe the notes
in the "Coolant" section (
page 64).
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