My Ford maintenance schedule says to change the transmission fluid at 60,000 "if" I have one of four or five specific transmissions. I have no idea what tranny I have other than an automatic with OD! It's an F150 Screw 4x4, 2004 model. Thanks in advance for any help.

 

It would be a good idea to do it. Take it to a shop that has an exchange machine. Doesn't matter which tranny you have.