Here is a test for you GLPers. Take a empty milk gallon to the gas station and pump one gallon into it.

It might actually be possible to find a gallon equivalent to 1 liter.

I've heard rumors of people doing such things. Geniuses and such.

I ALWAYS fill my tank in the morning for this reason - NEVER buy gas in the late afternoon

So every six months? Do you know the day or month he's coming?

Some gas stations in my area seem to cheat on volume. Why couldn't you cheat for the 5 months in between visits of the inspector? Can't you adjust or replace your flow measurement device, take the good one out and put in a bad one, then put the good one back? Or adjust it to run 10% fast, then carefully take that 10% back out before inspection?

gasoline in plastic container? very dangerous. STOP, use metal if you need to.

Could be because containers of any kind often hold more than the prescribed amount when filled to the top. For example, on the red gas can i have, there's a line that says 5 gallons, but its not all the way to the top. So if I actually filled it all the way up, it probably would be more like 5.5 gallons. I don't know where you live but in NY the county checks gas stations for accuracy every few years. I've seen the guy from the county check them before. So unless they bribe him to lie about the results, I don't know

Theory excellent for station with above ground tanks, but most are buried 6 feet underground.

So, you pickup the fuel from the person before you, and the person after you picks up your reminants. Equal washout. Next...

The milk container will melt/dissolve. Not funny.

I have to call:





...at least around here. I use 5 gal cans all the time and run 5 gals into them and it runs them right up to the fill mark.

Weight of Water Compared to Weight of Gasoline
At a temperature of 20 oC or 68 oF, a (U.S.) gallon of pure water weighs about 8.34 pounds, whereas a gallon of vehicular gasoline weighs about 6.15 pounds at that temperature.
Diesel weighs about 7.1 pounds per gallon.
Though the question is appears to be about weight, it is actually about density, which is weight per unit volume.
The SI-Unit of density is the kilogram per cubic metre, and expressed in those units, the densities are these:
Water: 998 kg/m3
Gasoline: 720 kg/m3
Diesel: 830 kg/m3You see this when gasoline and water are put into a glass: because they are immiscible and the density of gasoline is lower, it will stay at the top. (Be careful when doing this as gasoline vapor is explosive and toxic!)


[link to wiki.answers.com]

Some plastics, not meant for carrying fuel, will MELT when gasoline touches them.
This is dangerous.
Do NOT use milk jugs.




....if you must measure it use a legit gallon gas can.

Last Edited by Useless Cookie Eater on 02/11/2013 04:35 PM

1. How would you know when inspector is coming? Hint: There is no warning of an impending inspection, and it could happen two days in a row.

2. Why would I jepardize a business by risk being caught by inspector cheating? Hint: Gas sales is the convenient part of a convenience store. Profit is almost negligible, and the store depends on items in the store to make any profit what so ever. Selling gas attracts customers to my location, and they hopefully come into the store and buy products to actually help the store turn a profit.

3. I still call bullshit on the whole story.

in California they put oxygen in the mix...when it settles it is less..THEN DON'T FORGET THE VACUUM SUCTION DEVICE..

OOOOHHH....YA.. HOSEJOB LITERALLY

gasoline is a solvent.. solvents hold more or less depending on the temperature and 'contaminats' like humidity. not saying we are not beign cheated.. i'm just saying your test was not based in science.

I've had the same situation except she threatend to call the popo.

Since you were so determined to repeat this test then report it to the Department of Weights and Measures. The sticker will be on the pump when the last inspection was. Just saying..

Different manufactured pumps run at different speeds. Every pump must have a State certificate from the bureau of weights and measurements.
The next time you're at the pump,look for it. The tag has to be visible to the consumer. If the gasoline supplier was diluting gasoline with something other than federally mandated alcohol(hence E85,E10 and so on),they would be idiots,because the fines are so incredibly high,it's not worth it.
I'm sure there are those that try,but you won't find many of them at the Corporate level.They have too much to loose.

Oh man, I think that was a cartoon in Mad Magazine around 40 years ago! It showed a cross section of the underground gas tank - ONE tank - with 3 different pipes, each one leading to a different gas pump above ground, regular, plus and premium!!

From Wikipedia:

There is one gallon defined in the imperial system but two (liquid and dry) in the US customary system.

The imperial gallon

The imperial (UK) gallon, defined as 4.54609 litres, is used in some Commonwealth countries and was originally based on the volume of 10 pounds of water at 62 °F (17 °C). (A US liquid gallon of water weighs about 8.34 pounds at the same temperature.) The imperial fluid ounce is defined as 1⁄160 of an imperial gallon.

The US liquid gallon

The US gallon, which is equal to 3.785411784 litres is legally defined as 231 cubic inches.[1][2] There are four quarts in a gallon, two pints in a quart and sixteen fluid ounces in a pint. In order to overcome the effects of expansion and contraction with temperature when using a gallon to specify a quantity of material for purposes of trade, it is common to define the temperature at which the material will occupy the specified volume. For example, for purposes of trade, the volume of petroleum products[3] and alcoholic beverages[4] are both referenced to 60 °F (16 °C).

The US dry gallon

This gallon is one-eighth of a US Winchester bushel of 2150.42 cubic inches, thus it is equal to exactly 268.8025 cubic inches or 4.40488377086 L. The US dry gallon is less commonly used, and is not listed in the relevant statute, which jumps from the dry quart to the peck.[5]

hmmm seems to be ALOT of posters in here protesting and spouting off about laws & shit.

cops or shills?

True, and you can see, hear less gas getting into your tank at the last part of filling it. Just lift up the nozzle see it it start to trickle gas while the meter is still running!

I think they are also adding something to the gas, cause my truck is running like shit!

LOL are you serious ?! you dont know that oil is not an infinite resource ? oil is for our modern world just like blood for human body. if we run out of it then the shtf for sure, so whats OP is pointing out here makes perfect sense, maybe we will run out of oil sooner than expected...

Milk jug plastic cannot handle gasoline without 'melting'.

So yes, this was a test for you GLPers. How many of you are soaked in flammable fluid now?

Report that to the Dept of Ag (weights and measures)!!!!

That has got to be the most imbecilic answer I have heard to date.
That is going to make a MEASURABLE, VISIBLE difference???



Flunked high school chemistry huh?




Last Edited by Useless Cookie Eater on 02/11/2013 04:49 PM

Its the new economy gallon.

If I gad a gas station I wouldn't only give you less gasoline but I would mix it with water, to be on the safe side and make some extra money! LOLZ

To all intensive purposes, make sure your milk jug is Polyethylene before filling it with gasoline.

I've put gasoline in milk jugs.They don't melt.Think before you speak.