MTF Comparisons?

No experience with those.

I used to run 100% Dextron II.
This shifts great! But, leaves very little protection for the cluster pin. So I swapped half of it out, in favor of EP gear-oil. It didn't slow the shifts down that much, lol.
I think I used maybe 80/90, or 85/115; I can't recall anymore, other than that it was a light viscosity.

Just so you know; altho some FABO users report success with synthetic blends,
I had zero success, and I really tried hard to use it. For me, it was just too slippery, making the shifts just too slow, for me.