So I was driving my car the other day.....got it good and warm and when I pulled up to a redlight it started pouring oil smoke out the back. It did it the whole time I was sittin there and as soon as I took off again it quit smoking and didnt do it again. Two weeks later I pulled up to a gas station and left my car running and it did the same thing again. I cut the car off and le *** sit for a minute cranked it back up and it hasn't done it since. The car doesnt use any oil has no leaks and still runs like a top. Any thoughts?