Well I just found out that I need to replace my transmission cooling lines due to rust. Its an 06 xlt. Are there any other lines or parts that are prone to rust on the expedition? Basically its been a pretty solid vehicle. I'm going to replace the transmission filter while I'm at it. So it is basically around 12 or 13 qts of Mercon V correct? I couldn't find any youtube videos addressing the replacement of the expedition cooling lines so I'm assuming its pretty straight forward.