Yes, totally. I just happened to converse with ZF tech support in Germany on this very question.
ZF Germany says....
Normal range 175-212 deg F
Danger zone is about 248
They qualified their response as being what the 8HP70 (3.0l,5.7l,6.4l) is designed to operate at but that the OEM writes the software (sound familiar guys
which sets the actual operating temps. He said this is close but not exact as only the OEM knows the final application specific operating parameters.
How's that for luck in timing your question?