Gasoline Considerations

This is a discussion on Gasoline Considerations within the Off Topic & Humor Discussion forums, part of the The Back Porch category; I have a feeling this is not new but - in light of current gas prices, maybe worth a thought - any potential saving has ...

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Thread: Gasoline Considerations

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    Gasoline Considerations

    I have a feeling this is not new but - in light of current gas prices, maybe worth a thought - any potential saving has to be good.

    With the price of gasoline (between about $3.30 and $3.80 here in Southern California for unleaded regular - higher grades are well over $4 per gallon) hurting almost every budget, this advice from an email corespondent in the fuel biz about how to get the most at the pump is both timely and welcome.
    -Dan


    ... 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.


    1. 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. And service
    stations do not have temperature compensation at the pumps.

    2. 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.

    3. 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.

    4. 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. ALL gasoline stations must have "in-line"
    fuel filters....But, 'HOW OFTEN' they replace them is another
    story, so wait 25 minutes after a gas delivery, OR go to another
    filling station!
    Chris - P95
    NRA Certified Instructor & NRA Life Member.

    "To own a gun and assume that you are armed
    is like owning a piano and assuming that you are a musician!."


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    VIP Member Array Redneck Repairs's Avatar
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    About the only rule i have followed is that if i am going to drive 20 miles or more i will fill in the pre dawn hours , if i am not i will put it off untill later in the day . The reason is that gas like other liquids will contract if cold , If you fill your tank at 4 or 5 am say , and drive a short distance , then by 10 or 11 you have gas running out your fill pipe vent and dripping on the ground , i never have liked to pay for what i dont get to use .
    Make sure you get full value out of today , Do something worthwhile, because what you do today will cost you one day off the rest of your life .
    We only begin to understand folks after we stop and think .

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    VIP Member Array wmhawth's Avatar
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    Quote Originally Posted by Redneck Repairs View Post
    About the only rule i have followed is that if i am going to drive 20 miles or more i will fill in the pre dawn hours , if i am not i will put it off untill later in the day . The reason is that gas like other liquids will contract if cold , If you fill your tank at 4 or 5 am say , and drive a short distance , then by 10 or 11 you have gas running out your fill pipe vent and dripping on the ground , i never have liked to pay for what i dont get to use .
    You sound like a real Colorado boy...

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    VIP Member Array aus71383's Avatar
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    My auto shop teacher in high school said to use 10% diesel mixed with gasoline for better gas mileage...I still haven't tried it. He said it gave him another mpg or two.
    Thanks for the tips P95 - I knew about the early morning and half full stuff, but not the dirt or temperature compensation.

    Austin

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    Quote Originally Posted by aus71383 View Post
    My auto shop teacher in high school said to use 10% diesel mixed with gasoline for better gas mileage...I still haven't tried it. He said it gave him another mpg or two.
    Thanks for the tips P95 - I knew about the early morning and half full stuff, but not the dirt or temperature compensation.

    Austin
    10% diesel will lower the octane of the gas by 10 %, you may have "pinging" problems. You may also damage some emission sensors.


    Z
    An ounce of lead is worth 200lbs of cop.

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