These are indeed quirky machines. The fuel gauge is pretty much useless. Mine sometimes give me a reading that seems close to actual, but mostly reads 0. I've had it out to clean and inspect the float wires (inside the alloy tube) a few times now. Sort of works for a tank full, maybe two, then back to 0.
My personal strategy is to fill up until I get an auto click off (one time) then reset the trip odometer. I start looking for gas when I get to 180-200 miles on the trip meter. Never had an issue with that.
Some have reported issues (check engine light and rough running for a short while) when they try to fill the tanks 'up to the brim'.
