Fuel temp, why I look for unblended fuel

I got around to doing something ive want to do for some time and put a fuel temp gauge in. Installed on the inlet side of my first filter.
This is on a 01/pete with a 6nz cat. Truck stays in a warm shed every night. But it amazes me how fast the fuel will warm up.

 

Fuel started at 36 sitting in the shed. Idled for an hr while I loaded then drove about 10 miles and took pic. Outside temp is closer to 8. It jumped up a bunch sitting in line here

 

Yeah the temp probe could be installed in the tank if you've got a hole on the bottom for it.

 

Mine only had 10ft of cable from probe to gauge. Couldn't have reached the tank, besides I wanted to know the temp right into the filter