Help with heavy smoke from exhaust
 

I went home last night and noticed of heavy smoke came from exshaust and I don't know what I should expect. It only came about twenty minutes or so and then cleared. My car is 2001 T80 with 100k on it.

This is the first time I saw smoke came out of exhaust and because I am not a mechanic, I would greatly appreciated if any of you can help me out before I take it to the shop.

Thanks

I wonder if one of the turbo's are bad.