I've always wanted to do that, but. I didn't think the light in mine was working, until it finally winked on one night at 300 miles as I was zooming through a left turn. So I figure I'm safe at 300, and a commute trip usually comes up in the middle of that number, so I just stop and fill. If you know your mileage, give it a run.infinitidreams20 wrote: (i had a gas can with me and ran it dry to see)