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Join Date: Feb 2008
Location: United Kingdom
Oil from the gearbox/engine join could be from the balance shaft seals, crank end seal of the rocker cover and leaking down, the rocker cover is the obvious one to spot, but I have seen this before where it was actually the gearbox main seal and the mainshaft bearing had let go (funnily enough on a sele too).
The smoking is most likely the inlet manifold gasket, oil will be going from the variator channels straight into the #1 intake or if it's white then you have a dead lambda.