2009 F150 4x4 v8 4.6

Want to service my transmission. I saw a post that listed transmission codes (which I cannot find again now that I joined the forum). But it listed all letters. My Transmission code is #6 what type of trans is this? I want to order a new filter on-line and make sure I use the trans fluid. Thanks for any help....

 

6R80. Fluid is Mercon LV.

This transmission is not designed to be serviced in the conventional manner. It's designed to be serviced with a fluid exchange machine. It doesn't have a traditional dipstick, it has a plug underneath the truck that has a short dipstick attached.