Smoke and oil coming out the exhaust pipe

I had heavy clouds of smoke coming out I figured it
was my Turbo got it replaced and Smoke Stop but
started smoking again but a little white smoke with
coming out. I have all my fluid in my reservoir but  
can see that I have a mixture of oil with my
antifreeze in my reservoir still full no leaking from it
I was wondering can a problem comes from the
PCV valve because that was the hints I was getting
from other people my car started to shake a little
and my steering wheel became hard to turn need
some information about it please
And what problems can a Turbocharger causes on
the rest of the car