[Magnar Infectus]

The past three tanks I've gone into the 180s and not hit reserve. I fill up then anyway.

I know they make a gas cap for lawn mowers that has a float in it. In the cap there's a F \ | / E gauge. As the gas level moves up or down the float moves with it. The float then turns the gauge in the cap. An inventive person could possibly reengineer it to work with a bike. However the float is very sensitive and whenever the gas level changes it moves the gauge. So when the gas is sloshing around so is the gauge.