I filled up in Fort Worth yesterday and drove around Dallas a while, then back home north of Galveston.
My light is not on yet, (matter of fact it's NEVER came on, I hope it works), but I pulled in my drive with 316 miles showing,,,, and the needle is ALMOST touching the 1/4 mark.
EDIT to add.
OK,,, the light came on at 335 miles and I put 17.1 gallons in it!
I think I was gettin close.