GlenPettit 1,717 #1 Posted March 16, 2011 *TIPS ON PUMPING GAS** * *I don't know what you guys are paying for gasoline.... but here in California we are paying up to $3.75 to $4.10 per gallon. My line of work is in petroleum for about 31 years now**;** so here are some tricks to get more of your money's worth for every gallon: * * * *Here at the Kinder Morgan Pipeline where I work in San Jose , CA we deliver about 4 million gallons in a 24-hour period thru the pipeline.. One day is diesel**;** the next day is jet fuel, and gasoline, regular and premium grades. We have 34-storage tanks here with a total capacity of 16,800,000 gallons.** * * * *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. You should be pumping on low mode, 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 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. 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. * Share this post Link to post Share on other sites
sscotsman 186 #2 Posted March 16, 2011 Mostly myths.. or, if they are somewhat true, the "savings" are minuscule: http://www.snopes.com/inboxer/household/gastips.asp You can save much more money on gas just by checking your tire pressure! (better gas mileage) and by keeping you car well tuned and maintained. Scot Share this post Link to post Share on other sites
Duff 206 #3 Posted March 16, 2011 Oooh boy....here we go! Duff :thumbs: Share this post Link to post Share on other sites
mowerman1193 42 #4 Posted March 17, 2011 I would think that the ground temps wouldn't change that much over night to make that much difference too. I do not know how far down they put them tanks but they hold more gas than my swimming pool would and that doesn,t change a whole lot at night ( well ok maybe 5 degrees but thats out in the air where it changes dramatically overnight ).. When you get down into the earth a ways temps just do not change too much.. Anyone ever heard of running water pipes down into the earth to heat/cool a house..It will heat in the cold weather and cool it in the summer.. Kevin Share this post Link to post Share on other sites
Save Old Iron 1,571 #5 Posted March 17, 2011 myth or not if you are worried about the velocity of vapors in the the recycling tube of a gas pump as your filling up a pickup getting 15 miles to a gallon, driving 100 mile round trip to work - at 75 mph + driving speeds ... well, I have some compact fluorescent headlights I'd like to sell you for your truck. god bless Share this post Link to post Share on other sites
chris11 184 #6 Posted March 17, 2011 myth or not if you are worried about the velocity of vapors in the the recycling tube of a gas pump as your filling up a pickup getting 15 miles to a gallon, driving 100 mile round trip to work - at 75 mph + driving speeds ... well, I have some compact fluorescent headlights I'd like to sell you for your truck. god bless Chuck how much you got to get for those lights? Ill fill up my fuel drinking x state crown vic and drive there to get them.................. :thumbs: Share this post Link to post Share on other sites
Save Old Iron 1,571 #7 Posted March 17, 2011 just remember to turn them on about 15 minutes before sunset to let them warm up ! When you get here, the Mrs. will have cookies for everybody. Share this post Link to post Share on other sites
mavfreak 11 #8 Posted March 17, 2011 I know that if you just slow down your driving habits, such as, hard accelerating or driving over the speed limit. This will give you better mileage. Hence my wife thinks I drive like a grandpa and ******* I drive to slow. I can get 28mpg out of her car all the time. But when she drives look out nascar, but she'll get 25mpg or even less. Share this post Link to post Share on other sites
sscotsman 186 #9 Posted March 17, 2011 Mythbusters - "gas saving devices" Part 1: Part 2: Share this post Link to post Share on other sites
6wheeler 669 #10 Posted March 17, 2011 I am curious. How cold do you all think gasoline would have to be to not vaporize? I know liquid nitrogen boils at -30 degrees. I think liquid propane is very close to that. If the average ground temp below the frost line is around 60 degrees then wouldn't gasoline always make vapor regardless of the air temp? Chuck, could you ship some of those lights to me? I can't afford the gas to come and get them. Oh yeah, send some of them cookies too :thumbs: Share this post Link to post Share on other sites