[Amc-list] Fw: Gas Pumping Tips

["Ralph Ausmann" <ralph.ausmann@xxxxxxxxxxx>]

I received this info this AM from an AMC'er friend...  (see below)
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Ralph Ausmann  -  Hillsboro, OR - > <ralph.ausmann@xxxxxxxxx>

----- Original Message ----- 
From: Wayne Weller
----------------------------------------------

Gas Pumping Tips -

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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