This is my last problem I'll report from this weekend (honest). During the last session of 16 we saw dark smoke trailing out behind the car. At this point the car was being driven on fumes and the engine was cutting out often. Perhaps related is that the car is leaking what I believe is trans fluid; but also we noticed some light gray, almost white powder in the tail pipes where normally then collect black powder. Does anything think I need to look into the smoking issue further (other than the leaking trans fluid of course)?