Trip the odo. That way you can tell how many miles since filling up.
the amount of miles can vary.
I can get 100 from the tank when it's cold I have have the choke on to more than the end of the road, to 150 on a run where I'm doing a steady 70mph along the motorway (highway).
That's to reserve. Some guys won't use reserve, I won't go beyond 20 miles on reserve...
Gina
03 America - Pretty stock - except the TBS wheel...

06 America - missing, presumed in bits. With it's TBS wheel...

09 America - It's very blue....