03-14-2008, 01:24 PM
so this is going around and around via emails recently.. I think even IF all the points are true, the net effect of this is still so negligible ( may be less than 1% impact, I'm guessing <img src="/forum/images/smilies/968/huh.gif" class="smilie" alt="" /> ) that it's probably a waste of time to follow the suggestions, but posting this nonetheless in case anyone has opinions on the topic :
> > TIPS ON PUMPING GAS
> >
> > I don't know what you guys are paying for gasoline.... but here in
> > California we are also paying higher, up to $3.50 per gallon. But my line of work is
> > in petroleum for about 31 years now, so here are some tricks to get more of
> > your money's worth for every gallon..
> >
> > > Only buy or fill up your car or truck in the early morning when the ground
> > temperature is still co ld. 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 creat ed 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.
> >
>
> > TIPS ON PUMPING GAS
> >
> > I don't know what you guys are paying for gasoline.... but here in
> > California we are also paying higher, up to $3.50 per gallon. But my line of work is
> > in petroleum for about 31 years now, so here are some tricks to get more of
> > your money's worth for every gallon..
> >
> > > Only buy or fill up your car or truck in the early morning when the ground
> > temperature is still co ld. 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 creat ed 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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