Good info Stan. As they say your mileage may vary. I just filled up yesterday after stretching out the tank a bit. I went 714 miles, driving 88 miles past E, and only put 16.4 gallons in the tank. That is a bit lower than I really care to take it. Now I'm not so sure if there was a half gallon left or not.

I believe on Edmunds a TCH owner posted about filling up after running out and putting in surpising large quantity of fuel - I think it was 17.5 or so gallons.