Looking at new car, turbo smokes after hard drive

[M3Racer]

I'm looking at buying at turbocharged BMW E30. I went to look at it yesterday, and the owner drove it hard, then I drove it. I forgot to leave it running to let the turbo cool down, and opened the hood right after I got out. There was some white smoke coming from or around the turbo. I thought it might be bad seals, but was wondering if it could just be my failure to let the turbo cool down.

Any advice?
Modified by M3Racer at 1:10 PM 12/18/2006

[S13FASTBACKSR]

white smoke from turbos equals bad seals. did you see any white smoke coming out of the exhaust pipe after you drove it hard and came to a stop?

[S13240]

Depends, if the car hasn't been driven in a while and the owner has been tuning the engine he may have gotten oil/grease on the turbo/manifold and probably just burning off.

Other than that the only other possibility is if the coolant lines are leaking around the turbo.