does anyone elses fuel take a good hit when you whomp on it???? [Archive] - GrandAmGT.com Forum

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SnakeGT
11-01-2007, 10:12 PM
driving down the street and you hit it hard, i kno that hitting the gas makes the gas take a hit but sometimes it seems like its to much like i'll be at half a tank then i hit it hard the needle moves to the left a whole line,

this normal??

thanks

silvergtjrad
11-01-2007, 10:14 PM
que?

notsoaveragej0e
11-01-2007, 10:17 PM
I read that when you have half a tank or less, you'll use it quicker especially of you're goosing the throttle, because it's shaking up the fuel, allowing it to vaporize and thus evaporate from your tank. I can't vouch for the validity of this, but it sure sounds good.

notsoaveragej0e
11-01-2007, 10:19 PM
Other random gas related info (including where I made up that last post from)

1. Fill up your car or truck in the morning when the temperature is still cool. Remember that all service stations have their storage tank buried below ground; and the colder the ground, the denser the gasoline. When it gets warmer gasoline expands, so if you're filling up in the afternoon or in the evening, what should be a gallon is not exactly a gallon. In the petroleum business, the specific gravity and temperature of the fuel (gasoline, diesel, jet fuel, ethanol and other petroleum products) are significant. Every truckload that we load is temperature-compensated so that the indicated gallonage is actually the amount pumped. A one-degree rise in temperature is a big deal for businesses, but service stations don't have temperature compensation at their pumps.

2. If a tanker truck is filling the station's tank at the time you want to buy gas, do not fill up; most likely dirt and sludge in the tank is being stirred up when gas is being delivered, and you might be transferring that dirt from the bottom of their tank into your car's tank.

3. Fill up when your gas tank is half-full (or half-empty), because the more gas you have in your tank the less air there is and gasoline evaporates rapidly, especially when it's warm. (Gas storage tanks have an internal floating 'roof' membrane to act as a barrier between the gas and the atmosphere, thereby minimizing evaporation.)

4. If you look at the trigger you'll see that it has three delivery settings: slow, medium and high. When you're filling up do not squeeze the trigger of the nozzle to the high setting. You should be pumping at the slow setting, thereby minimizing vapors created while you are pumping. Hoses at the pump are corrugated; the corrugations act as a return path for vapor recovery from gas that already had been metered. If you are pumping at the high setting, the agitated gasoline contains more vapor, which is being sucked back into the underground tank so you're getting less gas for your money.

Mike Jung
11-01-2007, 10:38 PM
1. Fill up your car or truck in the morning when the temperature is still cool. Remember that all service stations have their storage tank buried below ground; and the colder the ground, the denser the gasoline. When it gets warmer gasoline expands, so if you're filling up in the afternoon or in the evening, what should be a gallon is not exactly a gallon. In the petroleum business, the specific gravity and temperature of the fuel (gasoline, diesel, jet fuel, ethanol and other petroleum products) are significant. Every truckload that we load is temperature-compensated so that the indicated gallonage is actually the amount pumped. A one-degree rise in temperature is a big deal for businesses, but service stations don't have temperature compensation at their pumps...
They do here lol

Prices are corrected for volume of gasoline at 15C/59F; it says so right on the pumps.

See: Are we getting hosed at the pumps? (in Canada) (http://www.cbc.ca/consumers/market/files/cars/gasprice/committee.html)
As it is an average temperature of less than 15C/59F here in Canada.