Just did a fluid and filter change in a 2000 Ford E150 with the 4.2 and the AOD maybe E? trans and When I pulled the pan, there was a yellow plastic thing that looks kinda like a lollipop. It was just hanging out in there... I think this was the first time the pan was pulled, and I dunno how long its been floating around. I couldn't find its home, so I pocketed it. Anybody know what it is, does or should be? I test drove it for 30 miles and its fine.... Should I be worried???