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      08-18-2010, 04:23 AM   #3
Lieutenant General
swamp2's Avatar

Drives: E92 M3
Join Date: Sep 2006
Location: San Diego, CA USA

iTrader: (1)

1. A very slight but noticeable whine from the DCT is normal but it should not have come only after your 1200 mi service

2. The 1200 mi service is not a "DCT service", it is an engine fluid and other fluids replacement.

3. I expect there is nearly a zero chance that they mistakenly changed your DCT fluid but it did happen to quite a few cars and most got the wrong fluid and had serious tranny problems that resulting in them being replaced. Double check with your dealer on this.