Manual Tranny Fluid ?

hey guys,

i am ready to fill my tranny after installing my motor and tranny but i am finding a lot of different opinions on what atf to use on my manual tranny.

haynes manual says mercon, i have ready mercon IV and dex/mer. I bought some transmax dex/merc, but i am not sure if this is the correct kind to use.
http://www.castrol.com/castrol/sectiongenericarticle.do?categoryId=82915486&contentId=7027043

can someone please confirm for me what tranny fluid i should be using?

thanks for the help
 
Thanks, just to clarify, the transmax dex/merc I bought is fine or dex3/ mercon u mentioned above? Or are they the same?

Also, I read on another forum that merconV replaced mercon. Sorry for all the ?s, I just want to do it right tge 1st time.

Thanks a lot