Rep Power: 0

Ok i filled up my tank the other day. Supposedly its 13.2 gallon capacity.....now i've filled it over a bit....and under a bit.....but yesterday..i pulle dup to a shell station and filled her up. It filled upto 15.322 gallons before it clicked at $43.50. FOR A HONDA CIVIC! My question: WHAT IS THE ABSOLUTLEY TRUE DRY CAPACITY for our fuel tanks? If its less then 15.322...then i've got shell by the *****.

 
Rep Power: 261

gasoline expands and contract with temperature..thats y sometimes u fill less and sumtimes more..it depends on time of day...saposedly its best to fill up in the morning because it had cooled all night so u get more for your money but who knows...also i no around here the thing starts counting before gas atually comes out..they try to squeez every bit out of u

 
Rep Power: 436

it should be 13.2 gallons with a 1 gallon reserve, but someone should correct me on this.

 
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some the gas station start the counter before it start to pump gas that is maybe it

 
Rep Power: 348

I've been BONE DRY and the absolute most they've squeezed in there was 13.8. Get them bastards! Make them pay for high gas prices!

 
Rep Power: 254

Bad Pump??

 
Rep Power: 813

its 13.2 otherwise its the gas station. expanding gas wont account for that. the engineers say 13.2 annd i believe that over what a gas pump tells you.

 
Rep Power: 476

yea thats i would complain and isnt shell gas a lot of money

 
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are you gassing the ground because if not you should at mos be able to put 13.5, try a different station, is it the same?

 
Rep Power: 348

ALL gas is a lot of money these days

 
Rep Power: 476

yea i know but the shell gas stations by me are more than all other stations and they seem to only have regular gas because there is only one price on those signs...unless they just dont bother to put the other prices up...this was before and during the huge gas prices

 
Rep Power: 348

Up here in Oregon, Shell is probably on average only 3-5 cents more per gallon

 
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in Az Its the same they advertise the cheap87, just add 10cents for mid grade89, and 20cents for premium91. I just wish we had 93 pump gas. gas here is 2.85 for the cheap crap

 
Rep Power: 476

its a good 20-30 cents more here

 
Rep Power: 401

but if you own a civic (that's not boosted) then you dont need premium so what does that matter?


by the way, if you got 15+ gallons on that pump, they ripped you off big time. i'd report it to your local news agency and let them sick those bastards. news reporters love this kinda stuff.

 
Rep Power: 0

The temperature thing has more to do with gas vaporizing. Fluids are incompressible, volume shouldnt make a bit of difference no matter what time of day.

As for the pump gage, yeah something may but up, but the gage is supposed to be government controled. Someone from your country should be in charge of making sure these are all correct. They should have a sticker somewhere on the pump that says its approved by so and so from your county. Behind the stick is whatever they use to calibrate the pump I believe. Newer ones may be different but still the gas stations get checked.

Besides all this something must be wrong, you should complain about it first. Maybe whoever calibrates it screwed up. They would probably get in more trouble than shell would.

 
Rep Power: 362

what about ladies? what if they can help? You sexist or something?


















(j/k)

Wow, anything is compressible. All you need is a good amount of pressure. In some cases if you compress a fluid enough you can get a super dense solid.
Also you can have 2 different masses take up the save volume if they are under different pressures.
Physics pwns j00

 
Rep Power: 401

"technically" everything can be compressed. however, for all intents and purposes, fluids do not compress or are considered uncompressible. water, for example, is compressible only with the most extreme amounts of pressure, and even then it compresses VERY little.

The definition of compression means that the substance being compressed has it's density change with pressure. water takes a MASSIVE amount of pressure to compress, and even then it's density changes very little.


so, for argument's sake, technically he's right that fluids are incompressible since it takes such a massive amount of pressure to compress them that none of us will ever see it happen over the course of our lives.

 
Rep Power: 0

Well then it wouldnt be much of a fluid anymore would it?

You are talking unrealistically, fluids are considered incompressible for anything in the real world.
Interesting fun little thing if you fill a glass bottle completely with water and close it, just try breaking it. Its not going to be very easy, because the water is incompressible.

 
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ok bottom line. i got screwed.

 
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Pretty much, if you got your receipt it probably has pump and time. Try the gas station, but there is probably someone in your local government to go to.

 
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UPDATE::: after 135 miles......the needle is still above the F haha. we'll c how many miles i get out of it......this may be interesting.

 
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haha, maybe you tank grew? I'd have to say the gauges arent accurate, but mine usually starts coming down before then.

 
Rep Power: 320

Humm.... then you filled your activated carbon canister with gas... not a good thing. At the top of the fuel tube coming form the tank there is a line that goes off and takes nasty gas fumes in the tank to an activated carbon canister there they are either trapped or reacted to something less nasty. If the automatic shut off on the pump is bad, it can fill this up giving you some weird gas, I'm not real sure what would happen, probably not much, but if you have some FP60 you may want to toss that in or maybe pick up some dry gas from a local gas station (cost about $1). I don't think your car is going to die or anything but I would just toss that in just incase something did come off the activated carbon into your gas. You may also want to keep that receipt in case something does happen you can point the problems back to that gas station, and don't go back to that pump.

 
Rep Power: 813

this is why i rarely fill the tank all the way up.

 
Rep Power: 401

yup. hopefully it's not enough gas to damage the canister. if it is damaged, eventually you'll get a check engine light, and the DTC will often say something about the evap canister. hopefully that doesn't happen, cuz they're expensive as hell to replace.

(FYI people this is why you should NOT top off the tank. after the auto shut off, STOP PUMPING GAS!)

 
Rep Power: 320

I think the auto shut off may have failed in this case.

 
Rep Power: 261

so what happens when he goes to the station and says he got charged to much he can only fit 13 gallons n they charged 15...they will just say somthing like he filled up a portable container with the other 2 gallons

and on the post about expanding gas with temperature and time of day...its not the liquid gas that changes but it releases vapors into the tanks underground..those vapors come out when u pump...and it messes with the reading on how much actual liquid gas u get ..they had a news story on it some time ago

 
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just for the record...i didnt 'top off the tank'. once the thing clicks i stop and leave. in this case....the pumped shut off at 15.322 i didnt go any higher. its at 3/4 tank now.

 
Rep Power: 401

oh i know, i was just saying that people who continue to fill after auto shut off can have this happen too.