When did your drive-train break in smell go away? I have 2600 miles on it and i still smell it on and off. Because i garage this car, the smell does linger for a little bit and it is unpleasant when it does give the smell off.
Is it a hot oil smell? A few people have posted about defective PCV systems leaking crankcase vapors out. They smell hot crankcase vapors after parking their cars hot, or inside the cabin through the vents after a hot start or after idling at a long light.
I had that smell even after 4000 miles until the dealer diagnosed it as oil seeping out of the oil cap and onto the exhaust manifold. A new oil cap took care of it.