Unless crazy excessive, I'd consider some white or light grey smoke and some fuel sheen at startup normal for those engines. Clearing up underway is a normal and good thing, of course.
I'm a little surprised there was significant smoke, and especially a sheen upon return. But, I have very little experience with the turbo versions of that motor.
I'll bet those who have them, or know them better than me, will tell you that isn't uncommon. But, I dont know that. I'm sure they'll chime in!
If old-school diesel engines otherwise run well, a little exessive white smoke or sheen at the slip usually pointa to injectors, injector pump timing, or fuel filters more often than a deeply rooted or super expensive issue.