Eric,
If you go the FAQ section on the Home page, then to Common Problems / Complaints, then look for the Transmission section, it will tell you all about the transmission fluid swap out.
I did mine this past weekend (just for kicks and grins)in my CSVT, as well as my F-150.
My ATF of choice was MObil-1 synthetic, only because of ease of availability. Many of the synthetic brands will give the same (or very similiar results.)
Good luck,
David
