[Schulisco]

To me it looks more likely to grey/white smoke which leads me to suppose that old detoriated fuel is the reason for that due it's most likely containing a low percentage of ethanol. Ethanol attracts water as well the fuel fell apart from its components over time. Especially the fuel in the small fuel injection lines coming from the fuel distributor. This also explains why this first puff disappears when "fresh" fuel coming out of the tank. My SC showed the same puff when sitting longer than half a year. Now barely seen this since I started using a fuel stabilizer on every fillup. Those fuel stabilizers should be used first and foremost on CIS cars imo.

Thomas