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      03-05-2012, 09:46 AM   #44
bigjae1976
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Drives: 11 E90 M3 Individual
Join Date: Mar 2006
Location: Wichita, KS

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2004 BMW M3  [4.50]
2011 BMW E90 M3  [5.00]
2013 BMW 328i  [5.00]
I used this DIY on my other M3...Mazda 3...auto tranny. It worked fast and I got to completely flush the tranny fluid.

http://krystmsgarage.com/?p=250

I wonder if the pump on the DCT is accessible and you are able to remove the hoses like the DIY above. Then maybe you could use the DCT pump to drain the old fluid while pumping in new fluid. So the transmission never goes dry and you should be able to do a complete flush.
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2015 F34 328iX GT Glacier Silver
2011 E90 M3 Monte Carlo Blue
2004 E46 M3 Imola Red