I searched the forum and the best I could come up with is that one forum member put in
18.2 gallons during a fill up. But he/she didn't actually run out of gas.
I normally pay for gas with a debit card, so when the nozzle shuts off automatically, I don't put in any more after that (I never top-off). I feel it's just wasting time to do that.
I suspect that others do the same...when the nozzle shuts off, put it back in the pump.
Anybody get more than 18.2 gallons in before the nozzle shut off?
Or has anybody actually run it dry, and then put in a gallon or so to get to the gas station, and then fill it to see how much total it took to fill it?