The factory Ford spec is between 80-120 degrees as shown on the scan tool, if you let it come "up to temp" it's already too hot. I hate these transmissions and their fill procedure.
Mine is a 2010. I checked mine and a few other's like 2008, etc, with my aeroforce gauges ( I have 3 of em on the A pillar, + a SCT-X3) and each vehicle displayed 170 F for tranny temp.... after it finally got up to temp. The folks at PA told me as long as it doesn't exceed 200 F, you don't have a problem at all. With the deeper pan, and extra 4 qts..and all of it now RP max ATF, synthetic, plus the B+ M tranny cooler ( which is a bar + plate design + T stat that operates off of viscosity) vs (tube + fin)... it takes a long time to get to 170 F. I can drive to the UPS office at the other end of town, and its only 155 F.. but that's all stop and go 30 mph. If on the hwy, it gets up to 170 F pretty quickly, but then it doesn't budge after that.
Where did you read the 80-120 F ford spec, that I have not seen. I checked a ton of stuff on line and typ auto trannys operate at 160-175 F, considered ..'normal'.
Regardless, the oem fill procedure is fubar. Not having a dipstick drove me nuts, esp with it puking ATF when the blower was on, and out for a romp. I could be down 1-2 qts easily, and never know it.
With the catch can in there, no loss of atf, levels stay put. I believe there are also aftermarket oem style pans available, that are same depth as oem, but have a dipstick..and a drain plug. Typ the atf levels drop a bit, when atf is at 170F, vs stone cold. Typ I will take it for a 20 mile drive on the hwy, then check level at a chevron gas station, since they are virtually dead level surfaces. Then leave eng on idle, while checking dipstick. Once level is tweaked, its never touched again.