Hi all, I'm new to the forum. I recently bought a 2005 BMW 320d sport auto with average milage, trouble is, white smoke coming from the exhaust. When the engine is running the smoke appears, then fades, then shortly comes back. I also noticed today there's drops of oil from the exhaust. The car doesn't idol well, it sits above 1000 revs for a while then drops ever so slightly, like a splutter, but ever so slightly. I know there's oil coming from somewhere, but what might it be. There's a 3 month warranty with the car, so i'm keen to get this rectified before it runs out. I've been told by the dealer its condensation, but I know its more serious than that. Can anyone point me the right direction please.