| Tips on buying Gas (petro) |
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| Rolex (rolex@astraweb.com) |
2008/01/14 06:05 |
Subject: Tips on buying Gas (petro)
From: "Rolex" <rolex@astraweb.com>
Date: Mon, 14 Jan 2008 13:05:39 GMT
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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. In slow mode 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 of the 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. 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.
--
Rolex
"May Dragons Fly Ever in your Dreams"
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