My newly rebuilt 3.8 engine still smokes.I have had the turbo sent out 3 times and still no differnt.When i atake the turbo off there is no signs of oil any where in the turbo.Has anyone had a stock tin intake manifold gasket leak and suck oil into the intake ports? I just took off the intake and i can see a puddle of oil sitting in the intake port on a valve that was closed.I think i am going to try the felpro paper intake gaskets and get rid of the tin valley tray gasket