Skip, I just wanted to make it clear to you that blue smoke doesn't have to be oil burning. It depends on how blue it is. If it's grey-blue then it's most likely unburned diesel fuel and small amounts emitted from a cold diesel is normal.

I started a thread a few weeks ago on engine "hiccups" during cold idle. Do a search if you want to look it up. My conclusion was that if you raise your idle speed a bit and run some Redline through the car which cleans the injectors and raises the cetane of the fuel, it'll fix the problem. If not, it might be something more serious.

__________________
2004 VW Jetta TDI (manual)

Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL