Mine just went down to zero. Only took 5 gallons. Just can't figure out why she's gotten less accurate since I installed the 280 3,000 miles ago.
a) it's a Morgan b) similar milage since installation, similar change of reading.. c) I don't care any more, I just refill (and I have some spare petrol on board)
Hannes once: Green M3W; 2013 now: Red 4/4 Sport; 2011 and some practical cars for use in real life