I was wondering if the tips on saving gas in this e-mail are true? It sounds good to me.?

Question

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 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 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 f the dirt that normally settles on the bottom. Hope this will help you get the most value for your money.

DO SHARE THESE TIPS WITH OTHERS!

Answer 1

No matter if the tank is above or below ground. The pick-up is in the bottom of the. So you get the same amount of fuel. Non of this will save you fuel. If the tanks are pro vent.  There should little or no problem with settlement. If the tanks are not pro vented. Then you have problems with water.

Answer 2

I tried to check it out on Snopes.com but couldn't come up with an answer.  Keep checking snopes!

Answer 3

These tips are debatable.  There have been articles published on the internet that make a fairly good case that such tips have no effect or almost no effect.

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Answer 4

You guys are paying 3.50? Here down in south its costing $3.70/gal.....Men i thonk ill relocate to CA...Otherwise the tips are cool...Ill be gassing up at 5.00am in the  morning........gimme

Ed. Texas

Answer 5

All of it is c**p. Pure c**p and scare tactics. It makes no difference when you refuel, because the temperature of the underground tanks does not fluctuate. The fuel is filtered before it gets to the pump, so it makes no difference if you refuel while the tanker is there. If it did, millions of cars would be on the roadside dead. It makes zero difference whether your tank is half full or empty when you refuel. Gas tanks are not vented to the outside air. It also makes little or no difference how fast you pump the fuel. All of this BS is written by someone with too much time on their hands and no knowledge to back it up. God I hate guys like this.

Answer 6

tip 1 cold gas = more gas

Though this is probably true and may make a difference to oil companies at a large scale, with a 15 gallon tank you'd prob be lucky to get a couple extra pennies of gas

tip 2 save on vapors...  though it may be true you're losing vapors the amount is so minuscule once again that it's prob not worth paying attention to.

tip 3 gas evaporates in tank.. while this may be true, most gas tanks these days are air sealed so you're not losing very much gas to evaporation.  Once again maybe you'd save a couple pennies doing this..

not sure about the dirt thing may be true.

Answer 7

None of these really make any difference with the exception of the last one, which is very true.

As for the ground temperature - it takes several days for the change in air temp to affect the temp in the ground.

The speed of the nozzle doesn't matter much. You'll have fumes regardless.

Filling up half full. On older vehicles this was somewhat true. They had carburetors and did not have sealed fuel systems. Newer vehicles have fuel injection and sealed pressurized systems. The gas can't evaporate.