Interesting read ... this comes from a gasoline terminal operator with 32 years of experience .....

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

 

nice read

 

paranoia but makes sense.

 

I've seen this before. There is no way I would have filled up my Avalanche with the nozzle set on the slowest speed lol.

 

Thanks for the advice but wouldnt the gas saved be miniscle as far as maybe saving a couple of drops of gasoline per gallon? I mean this looks something that mythbusters outta tackle but I'm not knocking you especially when gas is going to be $4 a gallon.

 

That's when you find one of those stations with a food court attached to it. Put it on low setting, leave to get your lunch (sit by a window to make sure nobody steals your gas) and by the time you get back you outta be 3/4 done!

 

thanks alot for the info david!! pretty interesting!!

thats B.S. u tell us this now when the gas is like $5 bucks a gallon..

 

I will try these and see if it helps

 

3.65 today.. and i thought 3$ was bad

i remember when gas hit 2.50 i thought that **** was expensive lol

 

i remember when gas hit 1.50 and I went through the roof! Damn Im gettin old. Took the white bitch to work today and filled her up at lunch.

$3.71 45 bucks later for 12 Fin Gallons

 

WOW! Will do

 

I guess soon we'll all be like:.....

"Son, I remember when gas used to be ONLY $4 a gallon....those days are long gone...." lol.

 

The cheapest I remember was $.97 back in 1996. We have come a long way and pay more.