smoking exhaust at operating temp

Hello rockmtn chapter

I am looking at buying a used Avant and the owner is describing it as having a cllloant leak which causes smoke in the exhaust. Apparently there is no sign of coolant in the oil or vice-versa.

Here’s a video of the issue:

KO4 turbo problem: http://youtu.be/ppD0ebHAAz4

Anyone care to chime in?

Thanks, James