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36 Gallon Fuel Tank

SilverPigeon

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In proper units, the 36 gal tank is 136 litres. I just put 122 in it, so I had 14 litres (3.7 US gal.)left; that would have got me 113 kms (at 12.3l/100km, or 70.7mi @ 19.12mpg) further down the road before using the fuel in the pipes 🤣

p.s., I did the conversion to arcane units because I know how lazy you all are 😜
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gagliano7

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You also have to remember the tank is long so a gallon of gas in the tank would probably be tough for the fuel pump to pickup the fuel especially while driving and fuel sloshing around.
 

thebestbear

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I run my tanks to zero when I first get them so I know what I'm dealing with. I did run my 36 gal. tank down to 0 in the city flats and was able to fill up with 34.49 gallons.

However...

When I parked on a hill facing upwards, I drove up and parked, but when it came time to leave the next day, the truck would not start because no gas. I was only able to get 32.76 gallons in it that time. Almost 2 gallons difference when facing uphill. The deal is the pickups can't get the gas when going uphill, but the system lines hold enough to keep the truck going for a bit until you get level again while driving. Moral of the story? Don't park facing uphill if your on E
 
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Eighthtry

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Thanks everyone. This will give my dealer something to work on.
 

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Groovicles

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I have a neighborhood question for a 36 gallon tank, 2023 F150 XLT 5.0. Despite driving it down to low "miles left" (as in 38 today), I can only fill to a max of 30 gallons. 100% of the time. Never 31 gallons. No matter how hard I try. This includes the slowest tank hand feeding after it clicks off at 30 gallons. It eventually runs over despite how slow the fuel is delivered, but never exceeds the 30 gallon range.

When I get in to drive off it shows a new range of, for example, 621 miles today, which works out to 17.25 mpg when divided by 36 gallons. I average 18.2 on the dash.

So, by throwing dog vomit on the wall my 30 gallon fill seems to be in the neighborhood of 17.5 mpg using 36 gallon capacity. My average is 18.2 on the dash. So I think the 17.5 mpg is a reasonable number, after examining the dog vomit.

I have never encountered this on a vehicle. I have probably owned 20 or more in my 71 years. If it said a 22 gallon tank, that is what it held, etc.

To sum, 621 range miles divided by 36 gallon capacity averages 17.5 mpg. I am averaging 18.2 according to to the dash. But still cannot get more than 30 gallons in refill.

621 miles divided by 30 gallons is 20.7 mpg, which is nowhere near the real world 18.2.

So, what am I missing? I haven't asked the dealer since I doubt I would get a knowledgeable answer. I am not even sure how to frame the question yet.

So far I have never filled at the same gas station so there appears to be some consistency in the numbers. No one is charging me for 30 gallons but delivering 35 gallons.

Is this making sense to anyone? It's giving me a headache, as is having to read dog vomit on the wall.

Otherwise it does not appear to affect me much. Just bumfuzzled.
Are you sure the dealership didn't just give you a PB and just changed the badging? 😅
 

fordtruckman2003

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Thanks everyone. This will give my dealer something to work on.
It is possible, but unlikely, that your calibration is off on the tank. I doubt the dealer will bother fixing such things but if you have a good relationship maybe they will look into it.
 

haroldyoung550

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Ford has had the same tank forever.
Older generation had issues parked on hill low fuel couldn't pick it up.
Ford fix was software change leave larger reserve never be in situation where your truck can't pick up the fuel.

You can drive well past 0 miles to empty. Just don't park on any hills. :)

I routinely hit 0 and put in 32 gallons, many of us do. It's a well known feature on this generation.

Still better than the smaller tank offered even with the wasted space.

Do you know if the 2015-2020 36 gallon tanks will fit on a 2021+ F150? Are they the same tank?
 

powerboatr

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Do you know if the 2015-2020 36 gallon tanks will fit on a 2021+ F150? Are they the same tank?
I would not be surprised
If it s the same
The frame has not changed in long time.
Ford saves money like the others by using many same components through out model lines
 

Calson

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Two different threads in this post. Does the tank hold 36 gallons of fuel and secondly is the miles to empty information from the computer accurate. I always have figured that the last two gallons were not to be relied upon and make fuel stops accordingly.

Yesterday the fuel gauge on my truck showed 3/4 of a tank and I added 12 gallons of gas to the tank. At the 3/4 market the tank should have required only 9 gallons to fill it up so the gauge is an approximate indication of the actual amount of fuel that is in the tank.
 

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Pr0sacK

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The last couple of tanks (36 gallon) I have driven like a grandfather. Eco mode on the interstate, adaptive cruise set at +3 for tolerance based on speed limit signs. I've been hovering around 24.5-25 MPG. I just think its fun to fill it up and see it say 850 DTE even though I know it will be more like 730 miles or so. Now that the experiment is over, I'll go back to driving it normally. I didn't buy it for fuel economy after all 😂
 

Kanuck

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Drove around town yesterday, filled up...started out at 1125km DTE, drove home on the highway, about 15 km, truck said 1127 DTE. Driving faster adds fuel in your tank...:crackup::crackup::crackup:
 

Jimko

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I don't think is is uncommon at all. I traded at 2022 Jeep Gladiator in on my 2023 F150. The Gladiator has a 22 gallon truck. However even when my low fuel indicator said I had like 10 mile to empty, I was only ever able to put in 17-18 gallons.
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