some gasoline tips from my dad - Wrist Twisters
 
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post #1 of 25 Old 11-22-2007, 10:48 AM Thread Starter
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some gasoline tips from my dad

My dad sends me some tips he receives from time to time.
since gas prices are high, he sent me this one he got from someone in California.
seems pretty good.

TIPS ON PUMPING GAS

I don't know what you guys are paying for gasoline. 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 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. 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.

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post #2 of 25 Old 11-22-2007, 07:29 PM
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Thanks for the tips!

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post #3 of 25 Old 11-22-2007, 08:27 PM
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cool stuff Thanks!!

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post #4 of 25 Old 11-23-2007, 12:23 AM
 
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Can you give more statistics

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post #5 of 25 Old 11-23-2007, 03:47 AM
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The tip about filling up at 1/2 tank intrigues me. I wonder how much evaporation actually occurs and if that rate slows in a sealed system once the air has become 'saturated'.

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post #6 of 25 Old 11-23-2007, 06:26 AM
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Quote:
Originally Posted by Ken View Post
The tip about filling up at 1/2 tank intrigues me. I wonder how much evaporation actually occurs and if that rate slows in a sealed system once the air has become 'saturated'.
Just off hand, I'd say this would benefit a carburator equipped car more that a FI car / motorcycle.
FI fuel storage is presurrized and vapors are tightly controlled. Charcoal canisters and such.

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post #7 of 25 Old 11-23-2007, 07:15 AM
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I think he meant more would be wasted as you fill because of the empty space in the tank.

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post #8 of 25 Old 11-23-2007, 07:16 AM
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looks like i'll be filling up in the morning from now on,thanks for the tips

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post #9 of 25 Old 11-23-2007, 07:54 AM
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Thanks for the tips...most of them make sense and worth a try with todays prices...

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post #10 of 25 Old 11-23-2007, 08:58 AM
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That was great!

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post #11 of 25 Old 11-23-2007, 09:19 AM
 
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I got that on an e-mail as well (I guess I, somehow, know your dad ), what intrigued me the most was the fact they mentioned you should pump as slow as possible since I always thought the faster was better in order to avoid the fumes to evaporate quicker... Hmmmm.

I have heard of the filling up at half tank since I was a young pup but I always thought it had more to do with carburated cars.

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post #12 of 25 Old 11-23-2007, 10:41 AM
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I typically wait until I am running on fumes...

Then pull in...

Insert company credit card...

And tank up with mid-grade - recommended for my car - on the fastest setting of the pump.

Sometimes I'll even get a reciept for my secretary!

Are gas prices going up?

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post #13 of 25 Old 11-23-2007, 10:46 AM
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Not sure how many of you have a back ground in thermo dynamics....not to diss anyone, but most of those tips are just plain meaningless.

First of all, Gasoline storage tanks are more than 4 feet below ground. The ground temp at that depth is for the most part constant. It will vary somewhat during the different seasons, it will not vary at 4 feet during the day more than maybe one degree F. At deeper than 4' (below the frost line), it is for the most part constant all year long. Any difference in temps you feel in the gas pump handle is due to the air temp effecting the temp of the fuel in the above ground lines leading to the pump and in the pumps.

The Vapor return "tip" is nonsense, the fuel going into your tank is almost assuredly cooler than the fuel in your tank....so the colder fuel going into your tank will lower the overall temps and will actually help condense vapor in your tank back to liquid fuel, the only vapor returned to the hose would be that vapor displaced by the increase in liquid volume....probably a thimble full of fuel if condensed back to a liquid.

The half full/empty thing....is just a restatement of the previous tip. The cold fuel splashing into your half empty tank will actually condense the vapor in the empty space in your tank, converting most of it back into liquid.

Large fuel trucks are temp compenstated because a 10,000 gallon truck delivering fuel in the winter at 20 degrees F, will hold a different amount of ENERGY than the same truck at 80 degree F. However, a gallon is a measure of liquid volume, not weight or density. The problem arises when you pump a tanker at 90 F into a tank at a ground temp of 58 F. The liquid volume will decrease as the 90 F fuel cools to 58 F. When you pump the 58 F fuel into your car tank at 90 F it will expand ever so slightly....so actually the 20 gals you pump into your tank at 58 F may actually expand to 20.1 gallons when it comes up to ambeient temps.

The ground temp tips are just plain wrong. The other tips could perhaps gain you one pint of fuel on a 200 gal fill up.

The last tip about the truck stirring up sediment in the tanks is absolutely true. And it is true that a gallon of cold gasoline contains more energy than a gallon of hot gasoline. But over the course of the year the fuel in the underground tank remains relatively constant...the sometimes substantial amount of fuel held in the supply lines leading to the pump will change in temp more dramatically. However since gasoline expands and contracts very little in the temperature range you are likely to experience, it's relatively meaningless when filling up a 20 gal fuel tank. If you were filling up a 10,000 gallon fuel tank a couple of times a week....yes the temp compensation would be meaningfull enough to take into account.
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post #14 of 25 Old 11-23-2007, 11:16 AM
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Looks like "Big Oil" got to Johnny before you did.....

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post #15 of 25 Old 11-24-2007, 08:22 AM
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Now that was funny!

And sad at the same time...

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post #16 of 25 Old 11-24-2007, 09:29 AM
 
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So... what are you prepared to do?

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post #17 of 25 Old 11-24-2007, 11:33 AM
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To obtain the most fuel mileage per gallon of gasoline as possible you
need to follow these rules. Engine in good running order, Tire pressure @
reccomended pressure. Light acceleration from a stop. Cruise speed @ 50-60
mph. If you install a vacuum gauge inside the vehicle you'll be amazed if you try to keep it @ the highest reading. Try to keep the vehicle as light
as possible. No extra weight in the trunk or back seats. Keep the fuel tank
between 1/2 & 3/16 when not going on long distance trips. Reason being if you are just around town and on a full tank if you have a 20 gallon tank. You are carrying around 80-100 pounds of gas that's not needed. Gas weighing in @ approx. 8 lbs. per gallon. All of these little things can add up to good savings over the long haul. There is alot more that you can do to max out your gas mileage, but some of it is unsafe & not feasable for some drivers.
Just my 2 cents worth

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post #18 of 25 Old 11-24-2007, 07:14 PM
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Yeah, I just love it when I see a red light up ahead, begin my slow decel and some jackass jams up behind, over and around in front, jams his brakes forcing me to slow using more brakes than I had intended.
The way I see people drive, you'd thing they were trying to burn gas as fast as possible.

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post #19 of 25 Old 11-25-2007, 06:40 AM
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I confess. I'm a bi-polar driver. When I'm in my UPS tractor trailer or in my personal Dakota, I'm very smooth. I coast when I can. I play the lights. This not only saves fuel and time, but also tires, brakes, clutches etc, etc. I got over 75,000 miles out of the Goodyear Wranglers that were oem equipment on the Dakota. @96,000 the front pads have about half of their service life left.

But when I throw a leg over the bike, it's Katie bar the door. I buy the longest lasting rear tire I know of for the 919, a RoadAttack, and I still can't get 4000 miles out of it.

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post #20 of 25 Old 11-25-2007, 06:56 AM
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Quote:
Originally Posted by gospeedracer919 View Post
To obtain the most fuel mileage per gallon of gasoline as possible you
need to follow these rules. Engine in good running order, Tire pressure @
reccomended pressure. Light acceleration from a stop. Cruise speed @ 50-60
mph. If you install a vacuum gauge inside the vehicle you'll be amazed if you try to keep it @ the highest reading. Try to keep the vehicle as light
as possible. No extra weight in the trunk or back seats. Keep the fuel tank
between 1/2 & 3/16 when not going on long distance trips. Reason being if you are just around town and on a full tank if you have a 20 gallon tank. You are carrying around 80-100 pounds of gas that's not needed. Gas weighing in @ approx. 8 lbs. per gallon. All of these little things can add up to good savings over the long haul. There is alot more that you can do to max out your gas mileage, but some of it is unsafe & not feasable for some drivers.
Just my 2 cents worth
And if you have an automatic, shifting at the recommended RPM's will help too. And if you have a car with VTEC you can kiss your mileage goodbye if you love to hit it at the 5800 mark!

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post #21 of 25 Old 11-25-2007, 11:38 AM
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Quote:
Originally Posted by gospeedracer919 View Post
To obtain the most fuel mileage per gallon of gasoline as possible you
need to follow these rules. Engine in good running order, Tire pressure @
reccomended pressure. Light acceleration from a stop. Cruise speed @ 50-60
mph. If you install a vacuum gauge inside the vehicle you'll be amazed if you try to keep it @ the highest reading. Try to keep the vehicle as light
as possible. No extra weight in the trunk or back seats. Keep the fuel tank
between 1/2 & 3/16 when not going on long distance trips. Reason being if you are just around town and on a full tank if you have a 20 gallon tank. You are carrying around 80-100 pounds of gas that's not needed. Gas weighing in @ approx. 8 lbs. per gallon. All of these little things can add up to good savings over the long haul. There is alot more that you can do to max out your gas mileage, but some of it is unsafe & not feasable for some drivers.
Just my 2 cents worth

Exactly...this stuff will save you far more gas than putzing around at gas pumps.
JohnnyB

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post #22 of 25 Old 11-25-2007, 02:30 PM
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Pfffttt ...

Who's still using that ole gasoline stuff? I use Hydrogen.

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post #23 of 25 Old 11-25-2007, 03:00 PM
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Quote:
Originally Posted by gospeedracer919 View Post
To obtain the most fuel mileage per gallon of gasoline as possible you
need to follow these rules. Engine in good running order, Tire pressure @
reccomended pressure. Light acceleration from a stop. Cruise speed @ 50-60
mph. If you install a vacuum gauge inside the vehicle you'll be amazed if you try to keep it @ the highest reading. Try to keep the vehicle as light
as possible. No extra weight in the trunk or back seats. Keep the fuel tank
between 1/2 & 3/16 when not going on long distance trips. Reason being if you are just around town and on a full tank if you have a 20 gallon tank. You are carrying around 80-100 pounds of gas that's not needed. Gas weighing in @ approx. 8 lbs. per gallon. All of these little things can add up to good savings over the long haul. There is alot more that you can do to max out your gas mileage, but some of it is unsafe & not feasable for some drivers.
Just my 2 cents worth

Those are great tips, but if your gas weighs 8 lbs per gallon its probably H20

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post #24 of 25 Old 11-26-2007, 05:32 AM
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All this stuff seems really anal to me. You're doing all that stuff just to save a few cents. I think if you're really that cheap there are better ways to save money. Like bagging a lunch instead of buying one. You can save $10 right there. Or you could just never get married. Think of all the worthless crap women buy.

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post #25 of 25 Old 11-26-2007, 07:58 AM Thread Starter
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of course men never buy useless crap.
none of us here of course.

I do agree with alot of what is said
keeping your engine in good condition, tire pressures at recommended , and smooth driving will save more gas and money than filling up in the morning.

I drive a deisel car during the week, I get 800-900 k per tank. depending on city/ highway, and if the AC is on.
my top speed in my car is around 140k downhill, and even though it is turbo, there is really no pickup at all.
I do alot of driving all day, mostly in the city.

I enjoy riding my bike on the weekends, and although I keep the bike in top shape, and tires at recommended pressure, I have to say I enjoy the acceleration and feeling of speed. so MPG be damned.

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