I've been trying to find a simple way to check and fill my trans fluid and i finally came across this idea which ill soon test. I figured a few of you guys may be interested as well so i figured i would share my find.
http://www.fordmuscle.com/forums/tech-exchange/466716-5r55s-dipstick-install.html
http://www.fordmuscle.com/forums/tech-exchange/466716-5r55s-dipstick-install.html