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Old 12-05-2012, 07:15 AM
mlukas161's Avatar
mlukas161 mlukas161 is offline
Officially Welcomed to the 'Fest
Location: WNY
Join Date: Oct 2008
Posts: 943
Mein Auto: 03 330i, 04 X3
Here is a DIY for the expansion tank replacement.

One for the thermostat

Here is the complete cooling system overhaul.
It's probably time to do this if it's never been done.

I've never heard of a transmission leak in the X3's. It doesn't seem to be a common problem.
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