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  #1  
Old 03-13-2008, 11:17 AM
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Tips On Pumping Gas

From an email I received....

Here are some tricks to get more of your money's worth for every gallon.

Here at the _____ Pipeline where I work in CA we deliver about 4 million gallons in a 24-hour period thru the pipeline.

One day is diesel the next day is jet fuel, and gasoline, regular and
premium grades. We have 34-storage tanks here with a total capacity of
16,800,000 gallons.

Only buy or fill up your car or truck in the early morning when the
ground temperature is still cold. Remember that all service stations
have their storage tanks buried below ground. The colder the ground the
more dense the gasoline, when it gets warmer gasoline expands, so buying
in the afternoon or in the evening....your gallon is not exactly a
gallon. In the petroleum business, the specific gravity and the
temperature of the gasoline, diesel and jet fuel, ethanol and other
petroleum products plays an important role.

A 1-degree rise in temperature is a big deal for this business. But the
service stations do not have temperature compensation at the pumps.

When you're filling up do not squeeze the trigger of the nozzle to a
fast mode. If you look you will see that the trigger has three (3)
stages: low, middle, and high. You should be pumping on low speed,
thereby minimizing the vapors that are created while you are pumping.
All hoses at the pump have a vapor return. If you are pumping on the
fast rate, some other liquid that goes to your tank becomes vapor. Those
vapors are being sucked up and back into the underground storage tank so
you're getting less worth for your money.

One of the most important tips is to fill up when your gas tank is HALF
FULL or HALF EMPTY. The reason for this is, the more gas you have in
your tank the less air occupying its empty space. Gasoline evaporates
faster than you can imagine. Gasoline storage tanks have an internal
floating roof. This roof serves as zero clearance between the gas and
the atmosphere, so it minimizes the evaporation. Unlike service
stations, here where I work, every truck that we load is temperature
compensated so that every gallon is actually the exact amount.

Another reminder, if there is a gasoline truck pumping into the storage
tanks when you stop to buy gas, DO NOT fill up--most likely the gasoline
is being stirred up as the gas is being delivered, and you might pick up
some of the dirt that normally settles on the bottom. Hope this will
help you get the most value for your money.


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Old 03-13-2008, 11:23 AM
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This seems to turn up every few months or so.
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Old 03-13-2008, 11:28 AM
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I know Myth Busters tested the temp thing and said it was a bust. Given that the temp under ground is pretty constant, buying your fuel at 2am or 2pm is not going to affect the temp of the fuel in the underground tanks to amount to much of a difference.
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Old 03-13-2008, 11:29 AM
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Riding a bike or walking actually DOES save fuel . . . .
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Old 03-13-2008, 01:35 PM
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Another chain email.

Not using your car seems to save the most!
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  #6  
Old 03-13-2008, 01:48 PM
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The idea of filling up when you're half-full to save on vapors is nonsense.

For every gallon you pump in, one gallon of vapor must be removed. If you fill up when half-full, you only get half the vapors, but you must fill up twice as often. There is no net gain.
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Old 03-13-2008, 02:04 PM
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Just to be on the safe side, I'm sending this to everyone I know.
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Old 03-13-2008, 03:36 PM
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Quote:
Originally Posted by Dee8go View Post
This seems to turn up every few months or so.
The spam e-mail cycle is shortening.
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  #9  
Old 03-13-2008, 09:37 PM
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What, no tips on pumping diesel?
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Old 03-14-2008, 02:17 AM
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Quote:
Originally Posted by Skippy View Post
What, no tips on pumping diesel?
Go slow so it doesn't fill half the tank with foam? Thats what I do....it might take a little longer, but I fit a lot more in there and don't have it come splashing out onto my pants.
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Old 03-14-2008, 06:31 AM
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These helpful hints will just about counter the effects of Manmade Global warming.
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Old 03-14-2008, 07:22 AM
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I seem to recall a notice on Canadian pumps, something like this:
"Volume adjusted to 15C."

Alex
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  #13  
Old 03-14-2008, 08:59 PM
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That's because it's colder in Canada, so the stations voluntarily install temperature-compensating pumps. They make more money that way.

Further south, they make more money from not compensating for temperature, so they won't install the pumps by themselves.

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