I have a 1999 F-150 4.6L V-8, auto tranny, not sure which one but the pan is flat with the big hump in the middle. The transmission leaks fluid from the output shaft only when it is moving, there is fluid all over underneath, but I can park it for a weak and there won't be a drop on the ground. It's not leaking fluid very fast, I was told by a shop what it was but I forgot, I think it was something like a bearing and an output shaft. The truck only has 89,000 miles on it and I don't want to spend 900 on rebuilding the transmission.