I have a number of vehicles, 72 BMW 3.0 , Hummer H1, 59 bug, F250 deisel...And have had a host of others, yet never run into this problem. I cna't smell or visually see any smoke, even when I stand on it.
VW's all mark their territory, my BMW motor with 110 miles on it is just getting broken in and doesn't leak or burn a drop.
I'm glad to see others are having this strange issue.
I'll just set my cell phone to remind me and or check it every thousand miles...
Cheers All!!