fuel warmer test results are in !!

[ELF]

I have been testing a fuel warmer off and on for about 7 months.

summer testing was four 100 mile round trips. 2 trips with the warmer on and two with warmer off. trips were done on 4 different days but temps were 80f to 85f. trips were early morning with very little wind.60mph cruise control.
trip no. 1 with FW. 31.9 mpg
trip no. 2 no FW. 33.9 mpg
trip no. 3 with FW 32.1 mpg
trip no. 4 no FW 34.1 mpg
my conclusion about 2mpg loss in warm weather.

one test at 24f did 20 mile test flat ground 10 west/10east. 55mph cruise.
west with FW 34.9 mpg
east with FW 35.3 mpg
west no FW 34.7 mpg
east no FW 35.5 mpg
my conclusion no change in mpg.

I did 4 test runs today 20 mile flat ground 10 west/ 10 east 55 mph cruise intake temp -8f
west no FW 29.7 mpg
east no FW 36.5 mpg
west with FW 29.5 mpg
east With FW 36.4 mpg
west no FW 28.5 mpg
east no FW 37.1 mpg
west FW 30.5 mpg
east FW 35.5 mpg

There was some gusty winds out of the NW today thats why big difference from west to east.
My conclusion no change in mpg.
One interesting note, when I took the FW off the radiator hose the FW was cold to the touch, I don't think it was warming the fuel too much. When I tested in summer It was hot to the touch.

I have some pictures but don't know how to post them, I uploaded them to my garage but how do I get the url to post them?