Coolant - BMW 840Ci Owner's Handbook Manual

Coolant

100
Coolant level with engine cold (app.
206):
Unscrew the reservoir cap.
The coolant level is correct if the top
end of the red float rod is level with
the top edge of the filler pipe (see
arrow in illustration, or drawing on
tank).
The coolant consists of water to which
a long-life antifreeze and corrosion
inhibitor has been added. The 50:50
mixing ratio must be maintained all
the year round to ensure protection
against corrosion. No other additives
are needed.
Renew the coolant every 3 years.
Adding coolant to system:
Open the cap on the equalizing tank
only when the engine has cooled
down. The pointer of the coolant ther-
mometer must be in the blue zone, or
else there is a risk of scalding.
d Turn the filler cap counter-clock-
wise slightly until the excess pres-
sure has escaped, then remove it.
d If the level is too low, add coolant
slowly until the level is correct – do
not overfill.
a
Never fill the cooling system
when the engine is hot. To avoid the
risk of possible subsequent damage,
use only factory-approved long-life
antifreezes and corrosion inhibitors
containing no nitrites or amino com-
pounds. BMW Service points are
familiar with these products. Anti-
freezes and corrosion inhibitors are
toxic. Store them only in the original
packs, out of reach of children.
Long-life antifreeze and corrosion
inhibitor contains the flammable com-
ponent ethylene glycol. Take care not
to spill long-life antifreeze and corro-
sion inhibitor on hot parts of the
engine, otherwise it can ignite and
cause serious burns.c
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