After more lookin around I found a few guys writeups on temp sensors installed in there Xcases.
Reported 150-200* normal daily driving and some in the 250* range towing and off road. Even had a few say they saw 300* in 4lo offlroading.
I kinda wouldn't mind trying something just to put a spin on filter inline and see what happens.
On the HMMVE I did a 4L80E swap in, it had cooler line from the transmission feed the transfer case then to the cooler then return to the transmission. But that being a full time 4wd unit and being used in extreme environments, I can see why they did that.
Sent from my SAMSUNG-SM-G870A using Tapatalk