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mleblond
03-04-2008, 10:29 PM
Hi guys,
got this in an email at work today. Let me know if any of this is true. IMO I think it's maybe negligible at most. But hey want to get feedback on this...

Mods: I did a search and did not find this anywhere...if a repost then delete I suppose.



TIPS ON PUMPING GAS (Good information)

I don't know what you guys are paying for gasoline.... but here in California we are also paying higher, up to $3.50 per gallon. But 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 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. 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 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.

WeatherB
03-04-2008, 10:32 PM
Haha. Got the same email a few weeks back...

I don't think the " Only buy or fill up your car or truck in the early morning" is correct. Most pumps have a note on them stating that "volume corrected to 15°C".

Xerox
03-04-2008, 10:48 PM
Haha. Got the same email a few weeks back...

I don't think the " Only buy or fill up your car or truck in the early morning" is correct. Most pumps have a note on them stating that "volume corrected to 15°C".

TopGear mentioned in an episode that it's better to fill up early in the morning exactly for that reason - more dense. Jeremy knows what he's talking about....doesn't he?

Noisy Crow
03-04-2008, 11:11 PM
I love how a little practical knowledge and common sense blows these hoaxes right out of the water! ...............


Once you are six to eight feet below ground, the temperature is essentially constant year 'round.

Since the gas-station storage tanks are large cylinders that lie on their side, there is no "roof" on top of the gasoline that floats up and down.

Car gas tanks have a vapour recovery system. It doesn't matter how much gas is in your tank.

All gas pumps have filters. Your car has a filter. Besides, the station pumps pull from the bottom of the storage tanks. Where all the crud is supposed to be.

tweak_s
03-05-2008, 12:44 AM
I think SOME of it can be applicable..but I have to agree with weatherB for


" Only buy or fill up your car or truck in the early morning" is correct. Most pumps have a note on them stating that "volume corrected to 15°C".

The pumps DO say that.

JashiK
03-05-2008, 02:33 AM
yea the pumps "do" say volume corrected to 15 degrees, but who knows if they have it off by a degree higher or two. I wonder if there are any "consumer relation" people that monitor it randomly to see if they are cheating consumers.

Skarbro
03-05-2008, 05:22 AM
It originates from California, where the temperature doesn't fluctuate as much as here. Perhaps there, their pumps don't correct. In Canada, all the pumps correct the volume to 15 degrees.

WildEmu
05-28-2008, 11:38 PM
This e-mail has been discussed on Snopes.

http://www.snopes.com/inboxer/household/gastips.asp

alexalex
05-28-2008, 11:44 PM
thanks for the heads up. i will keep your tips in mind next ti me i fuel up.
my mazda 3 is getting 550km for 44litres of regular, not bad, but could always be better! where i live the price is 1.50 per liter - i just don't know why people drive their big SUV's....

i have a general question to put on the forum - does anybody else out there find the gas pedal too soft? if i relax my foot then i rev the engine, or accelerate too much. i find it impossible to hold a cruising speed unless i use just the tips of my toes. seriously, i find my leg gets tired holding my foot above the pedal. the dealer tells me there's nothing wrong, they even replaced the pedal for me just to be sure, l but i am used to an old car and it seems hard to get used to. just wondering if it's just me. any ideas out there?

mEtH
05-28-2008, 11:54 PM
So I got called out on a repost, so lets discuss further here. This email has really intrigued me and want to know what others have to say.

waiting for a response from MajesticBlueNTO :chuckle hes always good for technical threads like this...

dentinger
05-28-2008, 11:59 PM
i dont think its much of a difference.
at most, your going to be saving maybe $1 a fill up.

Mafty
05-29-2008, 11:54 AM
the only one that seems possible is filling up in the morning. but even then idont know how true that is. the rest seem kinda dumb.

dj_chinaman2097
05-29-2008, 12:05 PM
I got gas around 7am today since my tank was near empty and I didn't make it out to La Paloma last night.

I got under 20 litres and when I got in the car the gauge read more than half full. I don't think I've ever filled half the tank with 20 litres before.

Fobio
05-29-2008, 12:09 PM
I got gas around 7am today since my tank was near empty and I didn't make it out to La Paloma last night.

I got under 20 litres and when I got in the car the gauge read more than half full. I don't think I've ever filled half the tank with 20 litres before.

So to clarify, you are AGREEING with the assertion that filling up in the morning gives you MORE gas?

Flagrum_3
05-29-2008, 05:55 PM
I get more gas when I mix pizza and beer, but I fill my tank at night and only with a full moon, its supposed to draw more fuel from the tanks due to the extra magnetic fields. :chuckle


_3


.

SilentJay
05-30-2008, 12:32 AM
Seaweed gives me gas :(

ghostdog
05-30-2008, 09:26 AM
I get slightly more mileage when pumping gas slowly as discussed in the original post... been trying out the slow method for a month now...

Thunder 3
05-30-2008, 11:13 AM
I'd pay more if it meant I could sleep in longer...if these methods work I kind of doubt it would be a big enough difference in the first place.

Fobio
05-30-2008, 11:16 AM
Filled up this morning at 6AM, trip computer showing 26 km of driving left, filled up with 43.5 L.

Might try slow method next time.

mleblond
05-30-2008, 11:20 AM
Filled up this morning at 6AM, trip computer showing 26 km of driving left, filled up with 43.5 L.

Might try slow method next time.

so about 70$ lol

Yeah I think it's more a myth that oil companies invented to make you feel better by thinking your saving on gas :chuckle