I recently replaced my Exhaust Manifold Gasket because it was leaking some exhaust. I also replaced the O2 housing gasket and the Exhaust intake gasket into the turbo (I think that's what it's called). It all came back together fine but for some reason now when I idle a lot of white smoke comes out of the exhaust and an unknown place that looks like its coming from the O2 housing area. It's kind of a sweet smell. My car is also leaking oil like crazy when I drive it. It's a 1998 GST with only 89,000 miles on it. Any information on what I should do would be great.