I read in four wheeler 175 but it was a general article all transmissions didn't know if it varied at all i'm going to put the sending unit in a test line pressure spot like they did in a article in this months four wheeler this will give me a reading before the cooler.
i have mine mounted in the tranny pan. it is reading the fuild just before it gets sucked into the filter.
during the summer the trans usually reads about 160-170 under normal driving and during the winter its below 140 with normal driving. i try no let the trans temp go over 210 when i drive hard.