Just drove 50 miles with low fuel light on. Fuel gauge was a needle width above E. Filled up took 49 gallons. Capacity 55 gallons. Does fuel gauge register below E? Did I really have 6 gallons left, anyone ever added 53 gallons up?
Most fuel gauges are not very accurate and guessing how much fuel you have left by the gauge can leave you on the side of the road. One other thing the fuel pump gets it cooling from the fuel around it so running low on fuel can cause heat to build up in the pump and lead to early fuel pump failure. The most accurate way to figure fuel is fill up drive a couple hundred miles and fill up again they use that MPG figure and apply it to your trip meter. 10 mph x 53 gal 530 miles to empty.
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Retired Navy
Jake my sidekick (yellow Lab) 10/04 - 05/20
2017 RAM 2500 CC 4X4 Cummins Diesel
2016 Flagstaff 26 FKWS
AF&AM & El Korah Shrine of Idaho
I have an Ultragauge(comparable to a Scangauge) which will show pretty close as to gallons left in tank and %. On last trip light went on showing 90 miles to go on gas I had at current MPG and showed I had 10 gallons left. Went about 70 miles and when filled up took just shy of 54 gallons which was pretty accurate.
Yeah, don't think I would ever let my tank get much below 1/3 left. I don't like gambling THAT much!
Besides, even with gas prices what they are, it would still cost a good deal to fill it. I like to make my 200 mile round trip, come home and then fill up. $45 or so just about does it.
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"Sunny" the 2017 Sunseeker 3010DS
2006 Jeep Liberty Toad
.... and lovin' life........MOST of the time.
Driving 62mph towing our 4,000lb toad we've learned that 320 to 330 miles is max for us. That leaves about 8-gals left in our tank or a 50-mi cushion. That's close enough for me. As a general rule we fill up at 1/4 left in the tank.
When we had a travel trailer and tow vehicle we stopped for gas at 1/2 tank. So, we're stopping less with the motorhome. It was a smaller gas tank, too.
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2017 Winnebago Adventurer 37F
TOAD: 2016 Lincoln MKX
Fillup generally at 1/2 way between 1/2 tank and 1/4. Never go below a quarter and rely on scangauge more than dash gauge
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Mary and Me
2015 2650s "Finally" SOLD
2015 Jeep Cherokee Toady
2023 Geo Pro FD19 "Almost there"
2022 Race Car Red HR Long Ford Transit 250 "The Iwish Roamer"
Ford fuel gages are always a bit off on their calibration. For example one fills their car or truck to full and the gage stays over full for some time., however when you get close to empty you are near out of fuel.
I experienced this with my mustang some years ago. Now I have and F-150 and same issue. The E-450 in the Sun Seeker is just the same. Filled it up and drove for over 100 miles before the needle moved off of full.
Lots of fuel definitely keeps the fuel pump cool so its important not to let the tank get to low.
The fuel gauge on our E450 is quite consistent but not linear, especially above 3/4 full. At 1/4 full, it consistently takes 42 gallons to fill. Exactly 3/4 of 55 gallons is 41.25 gallons. That's close enough for me.
My practice is to refill the tank before it goes below 1/4. No matter if the gauge is dead accurate or not, I worry about problems like an unexpected detour or being unable to get into the only gas station for miles.
I once checked a small gas station in the mountains on Google Earth to be sure I could get in it. When I arrived scaffolding blocked the side of the pumps that I needed. Fortunately, I was able to wind around the dirt back streets to get to the other side, and then do the same getting back to my direction of travel.
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RamblerGuy
2011 Sunseeker 3100
2016 Ford Edge Toad