12-05-2012, 07:15 AM
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Officially Welcomed to the 'Fest
Location: WNY
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Join Date: Oct 2008
Posts: 760
Mein Auto: 03 330i, 04 X3
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Here is a DIY for the expansion tank replacement.
http://www.bimmerfest.com/forums/sho...d.php?t=415259
One for the thermostat
http://www.bmw330ci.net/maintenance/thermostat.php
Here is the complete cooling system overhaul.
It's probably time to do this if it's never been done.
http://www.bmw330ci.net/maintenance/completecoolant.php
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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