I heard of 3 ways to save Gasoline. I am not sure if it is true or not but here they are. I also typed in the reasons why these 3 myths should work.

Is it possible to save gas by:

1.pumping gas in the Low setting instead of the High setting?
Reason: When you are pumping gas & you pull the trigger all the way up, the speed of the pump is set to high. On the trigger, there are 3 settings (markers, spaces, etc.) the one that is one the top is the High setting, next one down is the Middle setting, & the bottom one is the Low setting.
Now, when you are pumping, it is similar as pouring soda (or beer from what I have heard) in a cup. The faster & more you pour, the more fizz there is. The slower & less you pour, the less fizz you have.

2. pumping the when the temperature is cold?
Reason: During the day, the gasoline tends to heat up & becomes less dense due to the heat of the sun. As night falls, the temperature cools down. As the temperature cools down, the gasoline becomes more dense. With that in mind, that is why you should pump gas early in the morning when the gasoline is fully cold.

3. pumping the gas all the way to half a tank.
Reason: You know when you open the cap to the Gas Tank, you here the sound of air escaping? That is the sound of the evaporated gasoline escaping. You see, as the during the day, the heat strikes your car, causing the gasoline to evaporate along with the air that entered through the Gas Tank as you pump gas at the Gas Station.
Basically, the more Gasoline in the Gas Tank, the less air there is for the Gasoline to evaporate.

I would try these myths myself but, I don't have a car myself (still 16). So, are these myths true?

This is one of the funniest things ever... you do know that
1) Well, other than gas isn't carbonated, and many liquids don't get foams just by pouring (alcohol, water, etc) -- assuming it was true, it wouldn't alter gas consumption (other than the difference in having a less-full gas tank).

2) Gas is underground -- and that's pretty much a constant temp of 55 degrees I believe. It could be 120 out, of 20 below, the ground (and gas) would be the same temp. But again, assuming the variance was grate -- it wouldn't save gas, you'd just have less gas in the tank but you'd still be consuming the same amount.

3) Not sure offhand about the real reason for the air escaping -- but from my experience it only happens on really hot days, and when I'm really low on gas. So really, again it wouldn't save gas, you'd still be using as much. The gas tank's enclosed, any fumes/etc escaping would be negligible in the total gas usage (you probably use more gas to turn the car on than that).


Right not you save more gas than you ever will in the future -- you don't have a car. So, you personally use 0 gallons. If you share a ride, you're actually splitting the gallons used with the others.

Want to save gas, get a hybrid, don't drive (walk), and share rides everyone.

The reason you hear pressure escaping the tank when you pop the cap sometimes is BECAUSE of the vapor saving measures the manufacturers use.

The vehicles are already designed to capture and burn that vapor, so no, it doesn't matter. It's called Evaporative Emissions, and has been around in various forms since at least the 70's. Modern gas caps WILL vent, but it's typically 16PSI, and you'll have a very hard time getting your tank anywhere near that PSI in normal conditions.

Oh, and please ignore my prior spelling mistakes such as "of" instead of "or" and "grate" instead of "great" -- it didn't let me edit it.

Hello, do cars use more gasoline to back out of a parking space than to pull out forwards?