Synthetic transmission fluid?

[garyg] Anyone have any experience with synthetic transmission fluid?
I had to replace the tranny once in my &#039 93 Ford E150 conversion van. I have a transmission cooler, and I am towing a 30&#039ft Aerolite TT.
The local transmission shops didn&#039t think it was necessary to change over, but others have told me to do it.
Any feedback is appreciated.
Synthetic transmission fluid?

[Gary B] Last fall when I changed my fluid and filter in my Ford E4OD tranny, went to Mobil 1 and it dropped the temps 10 to 15*F Happy trails GB