First off, I apologize for posting about a non TDI VW. I got out of diesels last summer and the worst part is the lack of serious enthusiasts for the gasser VW's. Y'all have a different mindset here that kept me and my ALH golf running for 10 years and 100k+ miles. So here I am asking about a 2010 Passat Wagon I picked up a few days ago with 120k miles (and impeccably serviced for the first 90k miles of its life). However, It occasionally makes an odd noise when pulling off from a full stop. My daughter described it best... sounds like a dolphin. Noise only lasts a second or two. No detectable slippage and the shifts are clean and noise free otherwise. I have VCDS and have done the adaptation resets with no effect on the noise. I cannot duplicate the noise consistently, but seems to be more likely to happen when the engine is cold. On the full scan, VCDS detected no errors. I'm going to change the transmission oil/filter, but if that doesn't help, where else should I look.