HI
I would go with a coolant issue, with white smoke
Turbo seals usually gets blue smoke and soon followed with excessive oil consumption
are you getting it all the time, now the weather has shifted to the cold, you will get a fair amount of steam/white type smoke, while the engine is cold, if it all clears up once warm, this is normal this time of year.
if its a coolant issue, you will get coolant being used, if your not using any coolant or oil use, I would not worry too much
cheers
Joe