What's the most gallons of gas you've filled

I've put in 9.41 gallons before - that was about 20 miles after the lights had started flashing at me, and I didn't want to push it any farther. That tank was E10, burned primarily on a road trip: 70 mph, interstate with a fully loaded car (approx 900 lbs. of people), on a 30 F night, and after an underfill tank, so I only got 414 miles out of that tank. I normally fill up before the warning occurs, often when there are still 2 bars, though - don't want to have to use the roadside service and test it out!

 

I've wondered that myself. I think it really depends on the weather. The first time I filled my tank it was about 95 or 100 out and I had wanted to see the last square on the gage blink and the low fuel warning come on, so I ran it 20 or 25 miles on the last square. Well it never did blink and the low fuel warning never came on and I chickened out and filled it up, I got 11.7 gallons in it! I have never gotten that much in it again. The other day I ran it 20 miles or so on the last square and only got 9.5 gallons in it, temprature in the 40s. That's the only other time I've tried it, I hate to run out of gas. Maybe I need to calibrate my gage? Or maybe I just need to fill it up when it gets down to the last square and forget about the blink and the low fuel warning.

 

10.x Gallons. Trying to drain the tank, or overfilling it is a BAD idea. I suggest focusing more on improved FE. It is safe, and quite rewarding

I fill up using the low-flow notch of the pump, and NEVER try to pump more petrol in if at least 8 gallons have gone in (I fill up when the 'add fuel' alert chimes).

This winter has been much warmer than the one before, so although my fillups have been greater, I cannot tell if the bladder compliance has changed.

 

well i have only had a handful of tanks over 10 gallons, but since i got CANVIEW, i have increased my largest tank still without topping off to 10.484 gallons. that was about a month ago, effectively shooting down the smaller bladder in winter thing.

cant wait till summer, if the smaller thing is true, i'm hoping to get 11 gallons...

woo wee... im sooo excited...then again...10 gallons is fine... after all, more gas is just extra weight. considering it takes about 13-16 days between fillups, that would equate to what??

2 extra fillups a year. oh well.

 

that would be about right...actually a bit more than a gallon. with CANVIEW, the gauge is measured in percentages and the last bar starts to blink so far for me in the 12-14% range. mind you, since CANVIEW, only have had it to blinking 4 times including one time where it went to bouncing between zero and 2% (scary)

 

When I had the vehicle only about two weeks, I put in 11.5 gallons. Initially I thought the tank had been very low. Then suddenly, the tank regurgitated and expelled whatever was too much. I always fill up at the last flashing pip, never more than 10.5 gallons. This winter it is full at 8.5 gallons.

 

The most gallons I have ever put in my tank is 9.3 gallons. That was the one and only time I tried to top off. I was successful in getting more gas in the tank, but suffered the consequences of having some gas spill out. During the hotter months I average about 8 gallons per fill-up, and about 7 gallons when it gets colder.

I could have had the TSB done on the fuel tank, but after reading some of the stories of the ineffectual outcome, I decided not to.

 

Got 12.4 gal in but not in winter.

My normal fill ups if I wait for the blink are typically 10 gallons. My big fill up I was about empty.

 

once i eeked in just over 10 gallons, and the car spit it back out at me. i got caught up in the moment, sheer amazement at that fill made me keep pushing it.

last fill up it shut off at 7.5 gallons. i thought, that can't be right so i pushed it to 8, the car spit gas back out at me. bah.

generally i don't push it much if at all. but from now on, no more screwing around, period. i end my fillup at the nearest round number from where it shuts off.

 

In the summer, I can regularly fill between 11.5-12.5 gallons. In the winter, it's usually between 10-11.

However. I've pushed my car to the limit and beyond, completely running out of gas once, and having a 'spit-back' in the early days. After 48,000 miles (and the fuel filler TSB which was indeed ineffectual), I've had no problems other than the dealing with the stress of possibly running out. I personally can live with that, and carry a spare gas can in case.

If you don't want to push it, then don't. If you do, be prepaired to deal with the consequences. The one time I ran out, my calculations showed I should've had around another gallon still, but I didn't. On that tank I went less than 60 miles past the blinking bar - on others I've gone 78 miles over without problems.

I push it because driving 80 miles a day, an extra day does matter for waiting between fill-ups for me. If it doesn't matter to you if you fill up today or tomorrow or 3 days from now, fill when comfortable.

-m.

 

10.101 out of 483.568 total gallons used out of 60 fills so my average fill is 8.059 gallons. I usually fill up when I get to on one pip on the gas gage and certainly when it starts to blink.

 

I have gotten above 11 gallons three times in about 65 tanks, always in the summer and always with a blinking bar. More typical is 9-10 in warmer months and 7-8 in the winter months.


The highest by .08 was 11.728 gallons when we ran out of gas in between towns and limped to a gas station on the battery.

 

11.44 US gallons, 2001 Prius, temperatures well above freezing. Did not record at the time if it was blinking.

 

I've always hated the uncertainty of not knowing how much gas (give or take half a gallon) is left in my tank when I get a warning, or my last bar disappears---or, in the case of older cars, when the needle is exactly in the middle of the "empty" mark. That's why one of the first things I do with a new-to-me car it to TEST it, carrying a 1.5-2 gal container with me when the end of the tank is near. But I do it on MY terms---on my own time, driving only on roads where it will be OK for me to run out and just pull over anywhere (non-freeways best).

Even with a Prius, you'll do no damage if you put gas in immediately upon running out, so long as you don't run the HV battery down struggling to get closer to a gas station. Or, if you absolutely don't want to completely run out, you can say to yourself, "I'll be satisfied if I can just get to ___miles", multiplying your MFD-displayed MPG by, say, 11 gal. Then, if you make it to ___miles, and having marked down the mileage when you first got the warning, you'll know how many "extra" miles you can go.

If I lived in a more northern climate, I'd do it twice: in the warmest part of summer and the coldest part of winter.

 

Just so people DON'T try this, once you run out of fuel, the Prius will NOT restart until it senses a MINIMUM of 3 gallons of fuel in the tank. If Jack were to run it dry and then add 2 gallons, he'd still be stuck...

 

Now I'm curious about this needing 3 gallons. I have carried a 1 gal can and run out twice and car started up no problem.

If it didn't I would try disconnecting and reconnecting the 12 volts and that should help I think.

I did stop each time immediately when it ran out, so maybe theres a time out on the retries???

 

Sorry, let me clarify - If you run out of gas AND battery... the computer system is looking for 3G of fuel. I neglected to mention killing the battery, assuming that once out of fuel, most would attempt to go a bit farther on battery power. Sorry!