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Gas tips...

Ass Clown

DARKLY Regular
Not sure how legit these actually are, but came across them and sounds useful. Figured i'd pass it on to you all..

TIPS ON PUMPING GAS
I don't know what you guys are paying for gasoline.... but here in California we are paying up to $3.75 to $4.10 per gallon. 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:
Here at the Kinder Morgan Pipeline where I work in San Jose , CA we deliver about 4 million gallons in a 24-hour period thru the pipeline.. One day is diesel the next day is jet fuel, and gasoline, regular and premium grades. We have 34-storage tanks here with a total capacity of 16,800,000 gallons.
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. You should be pumping on low mode, 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.
 

Glocky

Drinking your tears
Perhaps it is regulated differently here in Canada...
http://www.consumerscouncil.com/index.cfm?PAGEPATH=&ID=13906

There is a sign on the gasoline pump that says the fuel is temperature is corrected to 15 C. What does this mean?
Gasoline, like everything else, expands as it gets warmer and contracts as it gets colder. Without temperature correction, a litre of gasoline on a warm day would contain less gasoline by weight than on a cold day. Gasoline is sold by volume but what you are actually paying for is the energy to make your car go. Temperature correction ensures that, regardless of temperature, you receive the same amount of energy for your purchase although the volume may differ. Measurement Canada, an agency of Industry Canada, regulates measurement of gasoline at the pump.
 

$alvador

TD Member
I follow #2 religiously but #3 is silly because you wind up burning more fuel lugging around an extra 200-300lbs of fuel than you'd lose from some evaporation
 
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