Are all 36 gallon tanks like this?
10-14-2023, 07:52 AM
#21
Senior Member
I can get another 3 gallons in my Edge every time I fill up no matter where I get gas. My F150 maybe a half gallon at best so I don’t try to put anymore in it.
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F150Boatdragger (10-19-2023)
10-14-2023, 07:58 AM
#22
Senior Member
Never have I topped off. Hose shuts off, it comes out of truck.
Fuel mileage is amount used, it doesn't matter how much is left in tank.
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10-14-2023, 08:12 AM
#23
Senior Member
Really folks . . . quit doing this! Because gasoline needs room to expand, your tank needs extra room for that expansion. If you try to top off, the extra gas you’re trying to add may actually evaporate into your vehicle’s vapor collection system. This can ruin the mechanism, making it work improperly, and cause your car to run less efficiently. 
10-14-2023, 09:11 AM
#25
![OTTO[AL]'s Avatar](https://www.f150forum.com/customavatars/avatar343069_3.gif){kind=avatar}
Been there, done that. Caught me by surprise first time.
Previous non-F vehicle with a gas tank of X gallons, I could fill as much as X+3 gallons for the occasional long drive.
No longer.
The jerry can suggestion (not for distance in my case) created its own mess. The container's nozzle is not identical to the gas pump nozzle.
The adapter was not helpful. I have to review manual for next time.
Brightside: You can sit inside the cab, continue to decipher Sync, wait for click, return nozzle and go:-))
Previous non-F vehicle with a gas tank of X gallons, I could fill as much as X+3 gallons for the occasional long drive.
No longer.
The jerry can suggestion (not for distance in my case) created its own mess. The container's nozzle is not identical to the gas pump nozzle.
The adapter was not helpful. I have to review manual for next time.
Brightside: You can sit inside the cab, continue to decipher Sync, wait for click, return nozzle and go:-))
10-15-2023, 05:16 AM
#26
Aluminum Can Connoisseur
Really folks . . . quit doing this! Because gasoline needs room to expand, your tank needs extra room for that expansion. If you try to top off, the extra gas you’re trying to add may actually evaporate into your vehicle’s vapor collection system. This can ruin the mechanism, making it work improperly, and cause your car to run less efficiently.
local usage in my truck is typically <1/4 tank. Also note the check valves as the F150 typically has enough room on top. Vans or more compact platforms not so much.
Of all the vehicles Ive driven over the years the ONLY one Ive managed to run bone dry was a Transit Connect. The DTE was showing 50 miles so I pushed it a lil further... then it sputtered and coasted off the exit with ~25 miles DTE showing about 75 yards from the fuel pumps. On my personal & work F150s the DTE is a lil more "accurate"
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2018 reg cab (10-15-2023),
Ronin57 (10-15-2023)
10-15-2023, 05:57 PM
#28
Captain of Industry
Nonsense. The tank is full when the pump clicks off the first time. Pumping in an extra pint or two doesn't increase the accuracy of a mpg calculation. A quart is about 1/2 of 1% of 36 gallons.
Last edited by Taggart; 10-16-2023 at 02:02 AM.
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10-15-2023, 11:05 PM
#29
the diagram is kind of funny... but on a highway fillup you will create that space very quickly at 60mph. I never turn my vehicle off when fueling and
local usage in my truck is typically <1/4 tank. Also note the check valves as the F150 typically has enough room on top. Vans or more compact platforms not so much.
Of all the vehicles Ive driven over the years the ONLY one Ive managed to run bone dry was a Transit Connect. The DTE was showing 50 miles so I pushed it a lil further... then it sputtered and coasted off the exit with ~25 miles DTE showing about 75 yards from the fuel pumps. On my personal & work F150s the DTE is a lil more "accurate"
local usage in my truck is typically <1/4 tank. Also note the check valves as the F150 typically has enough room on top. Vans or more compact platforms not so much.
Of all the vehicles Ive driven over the years the ONLY one Ive managed to run bone dry was a Transit Connect. The DTE was showing 50 miles so I pushed it a lil further... then it sputtered and coasted off the exit with ~25 miles DTE showing about 75 yards from the fuel pumps. On my personal & work F150s the DTE is a lil more "accurate"
it was interesting to see that. So now to avoid a possible future issue, I shut it off.
10-16-2023, 06:57 AM
#30
Senior Member
Hell, mine won't even take an extra handle pull... but it isn't a problem until I pull the nozzle out. Then it acts just like I'm trying to walk away from a urinal.
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17Sport4x4 (10-16-2023)