check this thread
https://www.crossfireforum.org/forum...-ta-daaaa.html

Sound like someone already missed with the trans fill cap because the original locking pin is black. I've noticed the same on mine. No visible leaks on the floor under the car, but jacking up the car and looking closely at the transmission, I can see that there is a leak of fluid which seems to be caking onto the housing.

The chrysler dealership probably didn't even have the dipstick to check the trans fluid level.