Waiting for my class to start today the teacher and an older student (this is community college) were discussing when they fill up there tank. They are by far the farthest from car people that you could ever meet so I was wondering when you guys fill up. It varies in my case. Often around town I am bad and wait until about an 1/8 of a tank but on longer trips I fill up right after 1/4 of a tank.

On a side note as I write this I just had 5 students say they think cars should be banned for everything but long distance trips (600 miles plus in their opinion). I really took the wrong class...

When do you fill your tank?