Fuel gauges aren't all that accurate so I would not trust any of them until they have been calibrated.
My Generator and Aqua-Hot Webasto burner both shut down from lack of fuel when my fuel gauge is somewhere between one quarter and one half tank.
One day when they did shut down and I was leaving on a trip to Homer and Seward the next day, when I did fill the tank the next day it took about 85 gallons of fuel to fill my tank. The fuel tank is rated for 128 gallons, so if you do the math there was about 33% of fuel left in my fuel tank when the Generator and Aqua-Hot shut down.
Since leaning that important information I now make sure that if stopping for the night or for any length of time where I need both the generator and the Aqua-Hot I make sure that my tank is over one half full or higher.
It's all in information management.
Dr4Film ----- Richard
2002 Monaco Windsor PBT 40Ft. (R HOME) - 30Ft. 2006 Pace Trailer (R JUNK). Trailer Has 06 VUE (R TOWD) 04 Victory Alen Ness Edition (R RYDE). Full-Timer for 14 Yr's BUT now a Part-Timer. Cummins ISC-350 With Banks Power Pack and Upgraded PRXB PacBrake.
Winter Home in Flagler Beach FL - Now Staying in Dansville NY for the Summer.