Coolant – BMW 2006 bmw 325i User Manual

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Coolant

Do not add coolant to the cooling
system when the engine is hot. If

you attempt to do so, escaping coolant
can cause burns.
To avoid the possibility of damage later
on, never use anything other than
factory-approved, nitrite and amino-
free extended-duty antifreeze with
corrosion inhibitor. Your BMW center is
familiar with the official specifications.
Antifreeze and anticorrosion agents are
hazardous to health. You should always
store them in their original container
and in a location that is inaccessible to
children. Extended-duty antifreeze with
corrosion inhibitor contains ethylene
glycol, a flammable substance. For this
reason, do not spill antifreeze with
corrosion inhibitor on hot engine parts.
It could ignite and cause burns.

Comply with the applicable envi-
ronmental laws regulating the

disposal of extended-duty antifreeze
with corrosion inhibitor.

Checking coolant level

Correct coolant level when the engine
is cold (approx. 68 7 or +20 6):

Unscrew the cap from the expansion
tank.

The coolant level is correct when the
end of the red float is aligned with the
upper edge of the filler opening (refer
to the arrow in the illustration), or max.
0.8 in (2 cm) higher, that is up to the
second mark on the float (see also the
schematic diagram next to the filler
opening).

46cde036

Add coolant

Wait until the engine cools before
removing the cap from the expansion
tank. The needle of the coolant gauge
in the instrument cluster must be
located in the blue zone. If it is not,
there is a danger of scalding.

1 Turn the cap slightly counterclock-

wise in order to allow accumulated
pressure to escape. Then open.

2 If the coolant is low, slowly add

coolant until the correct level is
reached – do not overfill.

The coolant is a mixture of water and
extended-duty antifreeze with corrosion
inhibitor. Always maintain the
prescribed all-season 50:50 mixture
ratio for year-round protection against
internal corrosion. No other additives
are required.

Replace the coolant every four years.