Tips on pumping gas - in my inbox today

clb · 2008-03-31

TIPS ON PUMPING GAS 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. > > 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. > > All of this information is available from the Department of Energy and each is required to state where they get their oil and how much they are importing.

508 Views 7 Replies 6 Participants Last post by Mrtambalynman, Mar 31, 2008

clb

Discussion Starter · Mar 31, 2008

TIPS ON PUMPING GAS 
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. 
> > 
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. 
> > 
All of this information is available from the Department of Energy and 
each is required to state where they get their oil and how much they are 
importing.

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RichMac

· #4 · Mar 31, 2008

From morning to night it really doesn't matter.. ground temperatures stay relatively constant... Now if the tanks were stored above ground.. like in your gas tank.. your better off doing most of your driving in the high heat of the day.. with the A/C off

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