I put some XL18 in my tranny yesterday. Will give it a try for one interval then try AMSOIL on next interval and compare.
The shift from 1st to 2nd is noticeably smoother with the additive in it now.
I'd like to give a shout out to Tommie Vaughn Ford in Houston who ordered the XL18 for me, thanks guys!
PS. Saw a 2013 Mustang GT police cruiser in Panama City, Panama it looked bad to the bone.