Is this the way to get more gas per gallon?

[Zero In]

Got this e-mail from a friend. True or fake?

Dear friends,

Got this from a friend working as an engineer with Esso. Happy trying. It
might work and I guess no harm trying now that the petrol prices has gone
up again!

More Gas Per Gallon: "You get more gas for your money if you fill up early
in the morning after the underground gas tanks have cooled off all night.
Cooler gas is more compact than it is after it sits in the hot sun all day.
You get many more molecules of gasoline in a gallon of cold gas than in a
gallon of hot gas." This was a friend's brilliant idea.

On a scientific point of view, this is true as when you pump petrol, the
metric of volume is used and not mass. And considering that when density is
at the highest when any substance is at its cooling point, you would get
more volume at the end of an average day. When you have try this out,
you'll know what I'm talking about.

 

[Kadarin]

Eh.. maybe.. but I think the effect is probably minimal. However, there is a bit of merit to the density idea, given that there are countless numbers of aftermarket performance parts that have to do with getting cool air into the engine. Moroso even makes a part called the "cool can" which is fuel line wrapped in a spiral placed in a can that you fill with icewater or dry-ice, the idea being that denser fuel and air into the engine produce more power. This is true, but the engine has to be tuned for it (to provide the optimum fuel/air ratio), or it will have little effect.

 

[Nefrodite]

lose some weight?

 

[rival]

gas never sits in the sunlight, its burried in large tanks underground, under pavement...im no worm but not much sunlight gets 5' underground..spray some on your hand the next time you fill up

 

[Passions]

make sure ur tire pressure is at their normal levels, keep windows rolled up when crusiing highway speeds, etc.

 

[Muadib]

Yes, it's true, however it's such a small amount it's hardly worth it. It's easy enough to test though. Try it for yourself.

 

[Barnaby W. Füi]

<< gas never sits in the sunlight, its burried in large tanks underground, under pavement...im no worm but not much sunlight gets 5' underground..spray some on your hand the next time you fill up >>


ding ding, we have a winner! ever seen the houses built into the side of a hill? my aunt and uncle have one, its about 50 degrees all year round, they just run a little wood oven to warm it up a bit, and dont have a furnace or a/c. this tank is TOTALLY underground, with no windows. its temperature probably varies by maybe a couple degrees between seasons, at most. day/night would make no difference.

 

[KEV1N]

I agree with Rival. Spray some on your face when you fill up to check the temperature!

 

[propellerhead]

Ummm..... as far as I know, liquids do not compress nor expand. That's why we use brake fluid and hydraulic fluid, etc.

 

[Mikelh]

Read the owner's manual. Great driving tips for increased fuel efficiency.

Michael

 

[Monel Funkawitz]

Have your wife/kids push the car on straightaways.

Chain car to passing semi trucks.

 

[geekender]

<< Ummm..... as far as I know, liquids do not compress nor expand. That's why we use brake fluid and hydraulic fluid, etc. >>



Oh...they do....try putting water in a pressure cooker and leaving it on your stove on high all night to test that theory. I think you are referring to the fact that they are not as compressable while in a fluid state.

 

[morkinva]

These tanks are probably buried below the frost line, so as noted, the temp doesnt change much.

 

[SuperSix]

Walk??

Actually, after thinking about it, I have to say "bull", as the tanks don't change very much in temperature, at least on a daily basis. They are underground where ambient temp is much more stable.

 

[MadRat]

<<Oh...they do....try putting water in a pressure cooker and leaving it on your stove on high all night to test that theory.>>

Poor example. You are talking about vaporization of water, not fluid expansion. There is a difference.

 

[Magicthyse]

Check this out.

Cracked or Not? You Decide...

 

[notfred]

liqids compress/expand very little, and I doubt that a tank 8 feet underground changes in temperature by more than 5 degrees at night anyway.

 

[StageLeft]

If this trick worked and you filled the car up fully and then drove around in the heat your gas tank would blow up from the extra pressure and everyone would die!

 

[TekViper]

<< Check this out.

Cracked or Not? You Decide... >>



what the hell is that supposed to be? i cant make sense of it

 

[KeyserSoze]

Did anyone read this page HardShips

What do you guys make of it, do you believe it? I would say that he wouldn't make it up, cuz someone could easily look it up and verify.




KeyserSoze

 

[Zenmervolt]

<< If this trick worked and you filled the car up fully and then drove around in the heat your gas tank would blow up from the extra pressure and everyone would die! >>

Actually, something similar does happen. This is why modern cars have an expansion chamber built into the fuel tank and also have a charcoal canister. The pressure change is not enough to rupture a fuel tank, but it does build up. Most owner's manuals caution against "toppin off" the tank unless you plan on driving for a while (25-30 miles) after "topping off" to allow some room for expansion of the gasoline vapor and thereby not overwhelm the charcoal canister.

ZV

 

[jhu]

you'd get more gas mileage by driving slower on the highways than you do now. that's why the speed limits were reduced to 55 mph back in the '70s

 

[Perknose]

Back in the day, I used to draft close behind (willing and asked) semi tractor trailers in my VW camper van, like the Nascar racers do, only for me it was a noticeable mileage boost -- I got sucked along in the big boys wake.

 

[Nefrodite]

Back in the day, I used to draft close behind (willing and asked) semi tractor trailers in my VW camper van, like the Nascar racers do, only for me it was a noticeable mileage boost -- I got sucked along in the big boys wake.


you actually got close enough? you gotta be like 3 feet from em or its totally useless %@# hard and dangerous.

 

[Perknose]

Not three actual feet, I sure as hell didn't have to be 36 effing inches away!! :frown:

A semi trailer produces a much larger low pressure wake than a Nascar racer, <B>Nefrodite.
</B>
I did have to be not much more than a car length away, which did sure feel like 36 inches, and does mean you have to keep on your toes the whole time, but in capable hands is not nearly as dangerous as it might look/seem.

Remember, this is on long, straight streches of (mostly) Western interstate in daylight and ideal (dry and clear) driving conditions, as done with a cooperative trucker. The key to consider is relative speed differences, which were minimal under these conditions. You learn to keep a constant eye on the truck's brake lights, which, anyway, in these conditions, and I can't emphasize this enough, THE TRUCKER NEVER USES (HIS BRAKES).

Hey, I wasn't the only one out there doing this, and I certainly didn't originate the idea. C'mon, chime in here, old timers!!