Pumping Gas

[DavesRepsol]

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 play 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(although HH likes it fast). 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 of the liquid that goes to your tank becomes vapor. Those vapors are being sucked up by HH 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.:D:D

[hondahoon]

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 play 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(although HH likes it fast). 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 of the liquid that goes to your tank becomes vapor. Those vapors are being sucked up by HH 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.:D:D

does this work for diesel too mr fuel scientist or does 95ron & 98 ron have diff evaporation rates you know it all geek
btw.. my juices evap from your pillow fast :p:p:evilgrin::evilgrin::evilgrin:

HH

[CANNONBALL]

does this work for diesel too mr fuel scientist or does 95ron & 98 ron have diff evaporation rates you know it all geek
btw.. my juices evap from your pillow fast :p:p:evilgrin::evilgrin::evilgrin:

HH

lmao! I just spit coke all over my screen:evilgrin:

[DavesRepsol]

does this work for diesel too mr fuel scientist or does 95ron & 98 ron have diff evaporation rates you know it all geek
btw.. my juices evap from your pillow fast :p:p:evilgrin::evilgrin::evilgrin:

HH

I don't know why you are asking about diesel, the evaporation rate of water is faster than fuel, and I thought all your kangaroo's ran on water down there.:evilgrin::evilgrin:

[MeanMachine]

Hmm, a geeky discussion... Cool.

Actually, the first 10 feet below ground stays at a constant temperature (between 50 and 60 degrees F) and remains unaffected by air temperature during the day so the gas temp in below ground tanks will not change relative to surface conditions.

Above ground tanks are another story (and are temp compensated), but they are more for bulk distribution and not for consumer fueling.

And you should not get gas when you see the fuel truck making a delivery. But dirt isnt the biggest danger because there are filters in place to trap it. What will get stirred up and get past filters is water. Water always collects at the bottom of fuel tanks (heavier) and filling the tanks will cause the water to mix up and get dispensed, and you don't want that in your tank!

[The Doctor]

ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ

Need to go ..........I have some paint drying that I need to watch....:sleep:

Borofc

[O.A. for life]

Cheap b@stards! lol

[DonnasRepsol]

ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ

Need to go ..........I have some paint drying that I need to watch....:sleep:

Borofc

Borofc,

I'm going to go help you watch the paint that sounds like a two man job to me or rather one women and one man....:sleep::sleep:

[DonnasRepsol]

does this work for diesel too mr fuel scientist or does 95ron & 98 ron have diff evaporation rates you know it all geek
btw.. my juices evap from your pillow fast :p:p:evilgrin::evilgrin::evilgrin:

HH

I had no idea I married a freakin geek....WTF

[LawnDart]

Hmm, a geeky discussion... Cool.

Actually, the first 10 feet below ground stays at a constant temperature (between 50 and 60 degrees F) and remains unaffected by air temperature during the day so the gas temp in below ground tanks will not change relative to surface conditions.

Above ground tanks are another story (and are temp compensated), but they are more for bulk distribution and not for consumer fueling.

And you should not get gas when you see the fuel truck making a delivery. But dirt isnt the biggest danger because there are filters in place to trap it. What will get stirred up and get past filters is water. Water always collects at the bottom of fuel tanks (heavier) and filling the tanks will cause the water to mix up and get dispensed, and you don't want that in your tank!

+1 on the water

thats why we drain fuel from the airplane tanks before starting the engines - remove any condensation that may have settled to the bottom of the tank and could cause disruption of fuel flow, vapor lock, or carb icing

[cowboyadam]

I just put gas in my truck.....