Hey Guest!
Hey - did you know if you click on the title of a thread it will take you to the first unread post since you last visited that thread?
but were afraid to ask: 
STOP!! Never post your email address in open forums. Bots can "harvest" your email! If you must share your email use a Private Message or use the 
smilie in place of the real @
Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
bugimike
Yoda
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Supposedly, these tips are provided by a petroleum industry "insider". I cannot definitively vouch for them, but it is interesting food for thought!
1. Only buy or fill up in the early morning when the ground temperature is at its lowest. All service station tanks are buried below ground. The colder the ground, the more dense the gasoline. When it gets warmer, gasoline expands so when buying gas in the afternoon or evening your gallon is not quite a gallon. In the industry, the specific gravity and temperature plays an important role. A 1 degree change in temperature is a big deal in this business but service stations do not have temperature compensation at the pumps!
2. When you are filling up, do not squeeze the trigger of the nozzle to a fast mode. Most triggers have three stages: low, medium and high. By pumping in the low mode vapors are minimized while you are pumping. All hoses at the pump have a vapor return. If you are pumping in the fast mode, some of the liquid going into your tank is vaporized and sucked back into the storage tank and again you are getting a bit less than you are paying for.
3. One of the most important tips is to fill up when your tank is HALF EMPTY (or HALF FULL if you are an optimist!). The reason for this is you have less air occupying the space in your tank. Gasoline evaporates faster than you can imagine. The storage tanks at the station have an internal floating roof. This roof provides zero clearance between the gas and the atmosphere, so it minimalizes evaporation. Unlike at the service station, at the refinery every truck that is loaded is temperature-compensated so that every gallon is the exact amount stipulated.
4. Another reminder, if there is a gasoline truck pumping into the storage tanks when you stop to buy gas, DO NOT buy gas there! Most likely the gasoline is being stirred up as the gas is being delivered stirring up the sediments that normally settle at the bottom of the storage tank.
5. Saudi Arabia is currently boycotting the purchase of American goods. We should return the favor and boycott their gas. It is interesting to note which oil companies import Middle-Eastern gas and which do not!
These companies DO: Shell (205,742,000bbls), Chevron/Texaco (144,332,000), Exxon/Mobil (130,082,000), Marathon/Speedway (117,740,000),Amoco (62,231,000)
Citgo imports from a dictator in S. America who hates the U.S.A.!
These companies import 0 Middle Eastern oil:
Sunoco, Conoco, Sinclair, BP/Phillips, Hess, ARCO.
All of this info is available from the Dept. of Energy
1. Only buy or fill up in the early morning when the ground temperature is at its lowest. All service station tanks are buried below ground. The colder the ground, the more dense the gasoline. When it gets warmer, gasoline expands so when buying gas in the afternoon or evening your gallon is not quite a gallon. In the industry, the specific gravity and temperature plays an important role. A 1 degree change in temperature is a big deal in this business but service stations do not have temperature compensation at the pumps!
2. When you are filling up, do not squeeze the trigger of the nozzle to a fast mode. Most triggers have three stages: low, medium and high. By pumping in the low mode vapors are minimized while you are pumping. All hoses at the pump have a vapor return. If you are pumping in the fast mode, some of the liquid going into your tank is vaporized and sucked back into the storage tank and again you are getting a bit less than you are paying for.
3. One of the most important tips is to fill up when your tank is HALF EMPTY (or HALF FULL if you are an optimist!). The reason for this is you have less air occupying the space in your tank. Gasoline evaporates faster than you can imagine. The storage tanks at the station have an internal floating roof. This roof provides zero clearance between the gas and the atmosphere, so it minimalizes evaporation. Unlike at the service station, at the refinery every truck that is loaded is temperature-compensated so that every gallon is the exact amount stipulated.
4. Another reminder, if there is a gasoline truck pumping into the storage tanks when you stop to buy gas, DO NOT buy gas there! Most likely the gasoline is being stirred up as the gas is being delivered stirring up the sediments that normally settle at the bottom of the storage tank.
5. Saudi Arabia is currently boycotting the purchase of American goods. We should return the favor and boycott their gas. It is interesting to note which oil companies import Middle-Eastern gas and which do not!
These companies DO: Shell (205,742,000bbls), Chevron/Texaco (144,332,000), Exxon/Mobil (130,082,000), Marathon/Speedway (117,740,000),Amoco (62,231,000)
Citgo imports from a dictator in S. America who hates the U.S.A.!
These companies import 0 Middle Eastern oil:
Sunoco, Conoco, Sinclair, BP/Phillips, Hess, ARCO.
All of this info is available from the Dept. of Energy
).
