not sure how true this is but posting just the same.

chrisy

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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 modeIf 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.

To have an impact, we need to reach literally millions of gas buyers. It's really simple to do.



I'm sending this note to about thirty people. If each of you send it to at least ten more (30 x 10 = 300)...and those 300 send it to at least ten more (300 x 10 = 3,000) and so on, by the time the message reaches the sixth generation of people, we will have reached over THREE MILLION consumers !!!!!!! If those three million get excited and pass this on to ten friends each, then 30 million people will have been contacted!



If It goes one level further, you guessed it..... THREE HUNDRED MILLION PEOPLE!!!



Again, all you have to do is send this to 10 people.. How long would it take?
 
It is true that temp is important r.e. gasoline and diesel. But a typical fuel tank at a station is an average of 6 feet in the ground, at least, and the temp down there doesn't change a lot. The fuel will pick up more temp going down the highway in a silver painted tanker than it will in the ground.
If every driver in the USA kept their tank 3/4 we would add a bazillion gallons to demand and drive prices UP. Most tanks never see half full.
 
Some of this has true parts manipulated into something that is untrue. When fuel is loaded on a tanker the temperature is taken at that time and again at delivery to the station because as stated fuel will expand. When unloaded into underground storage tanks it will cool and condense, the temperature readings are taken so the oil company can't charge the station for more fuel than the tankers were loaded with.

The hoses themselves having a vapor return is a total crock, the hose is just that, a single hose. There is a vapor return on the pump itself that will not allow vapor to be pumped through the pump or the hose, which would be very dangerous. The computer or meter only reads and computes the fuel that goes through the line after it leaves the pump.

As far as getting trash or water from the bottom of the tank, all pumps have filters and they have to be replaced regularly. If you are using a pump or fuel dispenser that is running slow, it's because the filter needs to be changed.

Also each pump is inspected and calibrated by the Bureau of Weights and Measures to make sure a customer is at least getting what they are paying for. Funny thing is they could careless if you are getting more than you are paying for. To make sure the pumps aren't pumping to much, the station owner has to hire a licensed independent company to come out and recalibrate the pumps.

Just my :2cents:
 
A fellow could save a lot more at the pump by keeping the proper amount of air in his tires then he ever could on how he pumps gas.
 

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