My brick has started smoking unbelievably bad. Think it is realated to the turbo as I found oil leaking on to the manifold/exhaust. Also a hum like the blowing on a bottle can be heard. Heavy amount of oil on my exhaust pipe and now leaking oil heavily where the muffler joins the exhaust manifold. Does this sound like a complete turbo rebuild? Have I damaged my exhaust or catalytic converter or anything else? She (just like a woman and I love her) has 227,000 miles, has been running great, been using some oil, no water in oil, hasn't overheated. Thanks for any help, ya'll are always great.