Fuel Tank Capacity

[hemigeno]

Starting with my third fill-up, I've been consistently able to put in over 21 gallons. I manually track every tank of gas in a spreadsheet, and the numbers don't lie. My AVERAGE fill-up is 21.769 gallons, and that's after about 55 tanks. This isn't a fluke.

It definitely requires patience to get those last few gallons pumped, and some gas stations (& even certain gas pumps) are easier for this task than others. Just like many people report, the pump almost always shuts off the first time around 18 gallons for me too - depending on how close to "actually empty" I decided to run. After that first click, it'll take me 5 minutes or more to top off. Slow and steady absolutely works, along with keeping the gas nozzle barely inserted... so that I can keep an eye on the gas in the filler neck. If the gas in the neck starts to back up toward the top, I just slow down even more or stop for a couple of seconds. Going to a station & a particular gas pump which allows slow dispensing is a must. Some are just awful, with tight springs/handles that are more like an On-Off switch. With this being my DD, I can usually time my fill-ups to stop at a station that I know works well for me.

Having done this as many times as I have, I can tell when it's getting close to "really full". Very rarely have I gotten gasoline splash-back, but it has happened... usually at one of those On-Off pumps.

This is just my experience. But, I can absolutely attest that we have at least a 22 gallon tank. There may even be a bit more useable capacity than that, but I don't want to push the envelope any more than I already do.

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[Diaster]

Is this the first time you've gotten gas? Have you noticed this issue on any other fill ups?

Kudos to you! I have been averaging 15 mpg for 50/50 town freeway. Only getting 19 on freeway and around 13 to 14 in town. Either I drive like shit or the mileage comp is way off

 

[Diaster]

Starting with my third fill-up, I've been consistently able to put in over 21 gallons. I manually track every tank of gas in a spreadsheet, and the numbers don't lie. My AVERAGE fill-up is 21.769 gallons, and that's after about 55 tanks. This isn't a fluke.

It definitely requires patience to get those last few gallons pumped, and some gas stations (& even certain gas pumps) are easier for this task than others. Just like many people report, the pump almost always shuts off the first time around 18 gallons for me too - depending on how close to "actually empty" I decided to run. After that first click, it'll take me 5 minutes or more to top off. Slow and steady absolutely works, along with keeping the gas nozzle barely inserted... so that I can keep an eye on the gas in the filler neck. If the gas in the neck starts to back up toward the top, I just slow down even more or stop for a couple of seconds. Going to a station & a particular gas pump which allows slow dispensing is a must. Some are just awful, with tight springs/handles that are more like an On-Off switch. With this being my DD, I can usually time my fill-ups to stop at a station that I know works well for me.

Having done this as many times as I have, I can tell when it's getting close to "really full". Very rarely have I gotten gasoline splash-back, but it has happened... usually at one of those On-Off pumps.

This is just my experience. But, I can absolutely attest that we have at least a 22 gallon tank. There may even be a bit more useable capacity than that, but I don't want to push the envelope any more than I already do.

An option on some gladiators is a 19 gallon tank per their website. Sometimes I feel that what I have. I checked the window sticker, nada but range is always astinated on screen at about 323 based on my freest mpg that 19 gallons based on my intone average that’s 22 gallons. Gues I need to do what you are doing and measure!

 

[Mr._Bill]

Diesels come with a 19 gallon tank, the size listed for the Gasoline engine is 21 gallons. The gauges appear to have a conservative calibration to keep drivers from running the tank dry and burning up the fuel pump. The MPG reading from the computer is fairly accurate, but includes all the time the engine is running. If there's much idling, it will be a bit off. I write the numbers on the back of the gas receipts so I can calculate the MPG.

I get about 16mpg around town and 22mpg on the highway. I know that I can get 400 miles on a tank, but have only pushed it that far twice. I don't watch range or mpg, I just fill the tank before it goes below a quarter full.

 

[Labswine]

Starting with my third fill-up, I've been consistently able to put in over 21 gallons.

I wouldn't go that low. We have 22 gallon tanks. Harkening back to the ZJ days, the fuel pump is actually cooled by the fuel in the tank. Back in the day, I've seen LOTS of posts regarding trashed/overheated fuel pumps because people would let their tanks get too empty on a regular basis.

I wouldn't put it past Jeep to continue this tradition of using the loaded fuel to keep the pump in the proper operating temperature range.

Going that low has the potential of letting your fuel pump overheat and shyte the bed.

I wouldn't go below 1/4 of a tank full.

 

[Diaster]

The deal for me is filling up less often but on a trip - if I filled up at ¼ tank, I bet I would have 6+ gallons - that is over 100 miles. If the trip is of any length you are filling up more often and you might be sweating reaching a gas station when you do not have to. It is not a major big deal but why can't I know exactly how far I can go? It seems kind of odd that it is that far off - my yesterday 18mile range was actually near 70 miles - that is a bit too conservative for me

When I go on a trip, I grab gas at the fuel light that’s is for at least 39 miles range. If I am out on the road with large gaps between station then I may fill up prior. I know my limits by using Apple Maps and search gas station, gives me sissy and Eric rarest. Etc

 

[ajlacombe]

It is pretty much 2 gallons of fudge on their range calculation. I also know that I can easily do 400 miles and most likely 440. I just do not like them fudging things - why not just give a read out of the gallons left? Pretty simple answer - and maybe multiply that by the current tank average. I know why they do not do the latter because of lawsuit material, but reading out gallon left would be helpful

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