Coolant, Coolant expansion tank – BMW X5 User Manual
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Coolant
Do not add coolant to the cooling
system when the engine is hot.
Escaping coolant can cause burns.
To avoid the possibility of damage later
on, never use anything other than fac-
tory-approved, nitrite and amino-free
extended-duty antifreeze with corrosion
inhibitor. Your BMW Sports Activity
Vehicle center is familiar with the fac-
tory specifications.
Antifreeze and anticorrosion agents are
hazardous to health. You should always
store them in their original containers
and in a location which is inaccessible
to children. Extended-duty antifreeze
with corrosion inhibitor contains the
flammable substance ethylene-glycol.
For this reason, do not spill antifreeze
with corrosion inhibitor on hot engine
parts. It could ignite and cause serious
burns.
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Checking coolant level and
adding coolant
Correct coolant level when the engine
is cold approx. +68 7/+206:
1. Start by turning the cap of the expan-
sion tank counter-clockwise. Pause
to allow any accumulated pressure to
escape, then open
2. 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, i. e. up to
the mark on the float, refer also to the
schematic diagram, next to the cap
530us102
3. If necessary, add coolant. Slowly add
coolant until the correct level is
reached – do not overfill.
Comply with the applicable envi-
ronmental laws regulating the dis-
posal of extended-duty antifreeze with
corrosion inhibitor.
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