My tranny temps typically have hovered around the 180 range (or slightly less) on most days, after having installed the aux retro cooler.
Some expereinces contained within this thread I authored:
http://www.ecoboostperformanceforum.com/index.php?topic=522.0On hot days, 90 degrees+ and driving the e-way for any extended period, or racing at the track, I would see it rise over 190 and as high as 200, but no higher.
I have a new aux trans cooler that has a fan incorporated with it, from DERALE, and for the time being, it has been collecting dust on the shelf.
I'll get to it this year, but the OEM one from Ford has performed above my own expectations.
Hope that is of some help to the discussiom at hand.
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