About 3 weeks ago I purchased a 09 Clubman S with 36,000 miles and the car has been driving and acting fine until last night while I was sitting in the target parking lot. It suddenly started to spitting out a good bit of white smoke out of the tail pipes. There wasn't any power loss that I could tell and the car never ran hot. I assumed it was the head gasket but I had a mechanic friend of mine look at it and he said it wasn't the head gasket because it didn't run hot. He thinks it might be the turbo or something else. I'm sure someone on here would know what is going so I just wanted to ask. Thanks in advance.

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