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 Pain at the Pump

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Scrappy Doo 2 U


Number of posts : 1263
Age : 47
Location : Misserable-Sippi
Birthday : December 18th
Registration date : 2006-11-27

PostSubject: Pain at the Pump   Thu Oct 11, 2007 11:04 pm



Subject: Interesting Gas Facts

I've been in petroleum pipeline business for about 31 years, currently
working for the Kinder-Morgan Pipeline here in San Jose, CA. We deliver
about 4 million gallons in a 24-hour period from the pipe line; one day it's
diesel, the next day it's jet fuel and gasoline. We have 34 storage tanks
here with a total capacity of 16,800,000 gallons. Here are some tricks to
help you get your money's worth:

1. Fill up your car or truck in the morning when the temperature is
still cool. Remember that all service stations have their storage tanks
buried below ground; and the colder the ground, the denser the gasoline.
When it gets warmer gasoline expands, so if you're filling up in the
afternoon or in the evening, what should be a gallon is not exactly a
gallon. In the petroleum business, the specific gravity and temperature of the fuel (gasoline, diesel, jet fuel, ethanol and other petroleum products) are significant. Every truckload that we load is temperature-compensated so that the indicated gallonage is actually the amount pumped. A one-degree rise in temperature is a big deal for businesses, but service stations don't have temperature compensation at their pumps.

2. If a tanker truck is filling the station's tank at the time you want
to buy gas, do not fill up; most likely dirt and sludge in the tank is being stirred up when gas is being delivered, and you might be transferring
that dirt from the bottom of their tank into your car's tank.

3. Fill up when your gas tank is half-full (or half-empty), because the
more gas you have in your tank the less air there is and gasoline
evaporates rapidly, especially when it's warm. (Gasoline storage tanks
have an internal floating 'roof' membrane to act as a barrier between the
gas and the atmosphere, thereby minimizing evaporation.)

4. If you look at the trigger you'll see that it has three delivery
settings: slow, medium and high. When you're filling up do not squeeze the trigger of the nozzle to the high setting. You should be pumping at the slow setting, thereby minimizing vapors created while you are pumping. Hoses at the pump are corrugated; the corrugations act as a return path for vapor recovery from gas that already has been metered. If you are pumping at the high setting, the agitated gasoline contains more vapor, which is being sucked back into the underground tank so you're getting less gas for your money. Hope this will help ease your 'pain at the pump'
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Donna D


Number of posts : 1142
Age : 55
Location : Northern Illinois
Birthday : January 8th
Registration date : 2006-10-05

PostSubject: Re: Pain at the Pump   Thu Oct 11, 2007 11:45 pm

Very helpful, thanks Scrappy!

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