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Old 09-09-2012, 09:11 AM
bimmerfan52 bimmerfan52 is offline
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Location: Arizona
Join Date: Feb 2012
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Mein Auto: 545i
Originally Posted by boramkiv View Post

If you took time to get under the hood and fill,
you should do what tommyv says. The radiator
will not drain out if you just remove the reservoir
especially if you use rags to secure the hoses.
So only the first paragraph is what you should worry
about and then top off as you originally did.
I'm sorry but it's not okay to just leave tools
wherever they fall and forget about them.
No need to feign such a level of shock.

Normally I would agree with you, but it's not like he dropped a socket into the oil filler hole on a valve cover.

Just handling any of the potentially brittle coolant system components can lead to a failure. If the car were older I would say remove and replace the expansion tank, but on an '08 it is early to replace the expansion tank as preventive maintenance.

Tell me what harm the tubing will cause and if it is worth the risk of damaging something else (and having to run to the dealer to purchase the part or wait until they open), or even if it is worth the 30 to 45 minutes to drain it disassemble it, and refill it, just to say you retrieved it.
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