If you have this Ford transmission, the 30K mile service requires an external filter change.
Ford gave me the wrong filter element for mine. Upon researching, I found what I believe to be a superior filter to Ford OEM (which actually comes from some European company I believe).
http://www.filtranllc.com/home/docum...rap-030508.pdf Filtran makes what appears to be a better filter element. Unfortunately, they are not available in typical parts houses.
They sent me to
Transtar Industries, Inc. to buy mine. Transtar charged me around $13.00 per filter, about half the price of the toilet paper roll OEM filter element.
I have no stake in either company.