Immediately after changing the oil in my 2009 Forester, I noticed the transmission would race, did not want to shift and the vehicle did not want to go more than 15-20 MPH. When i tried to go faster, a huge cloud of white smoke came from somewhere out the rear. Before the oil change, it was running fine. Is there a transmission fluid line I could have damaged somewhere near the oil filter? Any help would be greatly appreciated.