Hi!
I would like to tell you my story abuot engine leeking on exhaust..
I had simular problem with leeking engine. Couldn't find where from the oil leeks down.. After a few veeks of researching decided that it is rear crankshaft sealer.. So I replaced it vith the new one.. And what you think - problem was still there. Smoking monstr... So finally decided that I hawe the blown gasket. And the problem was sold..
It's only my experience. Hope you have som smaller problem