Hi jfof,
I thought so too... but that temp was after a leisurely drive of about 7 miles, and on a cool day.
Since I posted, I've seen it up as high as about 155F on longer trips.
When the engine and trans are COLD, they both read the same temp, so I'm inclined to think that what I've got now may be correct.
The car is an 08 Honda Element... Not a lumbering hulk that taxes the tranny much. Yes, there's a cooler in the radiator, but no additional cooler.
Thanks for replying!