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Is this true?


Guest Melanie

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Guest Melanie

I know that filling up at a gas station when the tanks are being filled is bad b/c the sediment gets in your tank, but is this stuff true as well? I hope so, this is good info if it's true.

 

 

 

 

 

 

 

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. 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 one 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 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.

 

Hope this will help you get the most value for your money.

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Ground temperatrues are fairly stable, especially throughout the course of a day. The tanks are deep enough in the ground that the temperature of the fuel in them isn't going to change from morning to night. Gasoline expands at roughly 60 degrees, so it would have to be really hot for a long time to get the ground warm at that depth. If you think about it, most basements are nice and cool all summer long, and those storage tanks are deeper than that. But they are right about not getting fuel while they're filling the tanks.
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These "tips" have been passed around the interweb more than 2 girls and 1 cup. I believe most of them are technically true, but they make such a minimal difference, it's not worth paying the slightest bit of attention to them.
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