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      11-23-2009, 01:23 PM   #5
Private First Class

Drives: 2010 E90 M3
Join Date: Aug 2009
Location: Princeton, NJ

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Originally Posted by pman10 View Post
Sorry to hear this. I am taking my car in Wednesday for its first break-in service. I believe they told it would just be an engine oil change but who knows? Their service has been great so far though - I will let you know how it goes. Is there a reason why not to change the dct transmission fluid btw?
BMW says not to...

Le Mans Blue M said that DCT can benefit from changing the oil every something miles...I don't remember exactly what it was.

As for the exact reason why...most BMW dealerships don't have the correct rated oil in stock...and usually change it with regular tranny oil...which results in.... transmission. If you absolutely know for a fact that they have the right oil...then there is no harm in it...but I still would not do it.