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Thread: Petrol

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    Petrol

    What is the best day to fill your car with petrol (gasoline)?
    Jerry

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    4 Star Lounger SteveH's Avatar
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    Re: Petrol

    <span style="background-color: #FFFF00; color: #FFFF00; font-weight: bold">The coldest day of the year?</span hide>
    Steve H
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    Re: Petrol

    Excellent Steve.

    This caused a discussion in the office yesterday which expanded to <span style="background-color: #FFFF00; color: #FFFF00; font-weight: bold"> if it is a cold day then obviously metal contracts so the petrol tank would get smaller too. So the question was would the petrol contract more than the petrol tank? and what if you filled the tank to full, when the temperature increased would the tank overflow, but as the tank had a cap how does the engine deal with a push of petrol through the carburretor</span hide>

    You can see we had a busy day yesterday!!
    Jerry

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    WS Lounge VIP sdckapr's Avatar
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    Re: Petrol

    An alternative answer:
    <span style="background-color: #FFFF00; color: #FFFF00; font-weight: bold">The day before your car runs out of gas</span hide> <img src=/S/smile.gif border=0 alt=smile width=15 height=15>

    Steve

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    Re: Petrol

    The best day would be timed such that <span style="background-color: #FFFF00; color: #FFFF00; font-weight: bold">it will just begin to cough and splutter as you drive it into the car dealer's as a trade in.</span hide> Worked for me!

    Alan

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    Re: Petrol

    I think most if not all cars have a vent on the petrol tank which is designed to prevent overflows due to expansion. The pump nozzle has a cut-out which would probably prevent you filling it completely to the top as well.

    Perhaps one of the scientific gurus in the Lounge can give us a learned dissertation on the relative co-efficients of thermal expansion of steel and petrol? <img src=/S/shrug.gif border=0 alt=shrug width=39 height=15>
    Steve H
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    Re: Petrol

    <img src=/S/whisper.gif border=0 alt=whisper width=29 height=17> I think you converted gallons to liters the wrong way round: 1 US gallon ~ 3.785 liters. <img src=/S/smile.gif border=0 alt=smile width=15 height=15>

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    Re: Petrol

    Getting back to the original question, I'd imagine that a hypothetical situation like you describe would make that one of the worst days you'd ever filled your tank. You'd either lose

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    Re: Petrol

    Considering the taxes on fuel we have here, it's never your best day when you have to fill your tank.
    Francois

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    Re: Petrol

    <P ID="edit" class=small>(Edited by sdckapr on 08-Jan-05 11:24. Corrected conversion error - (Thanks, Hans))</P>Steel has a coefficient of volume expansion of approx 3.3

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    Re: Petrol

    <img src=/S/blush.gif border=0 alt=blush width=15 height=15> You "think" correctly (though I bet that you really "Know" I was wrong <img src=/S/grin.gif border=0 alt=grin width=15 height=15>) I corrected the original post.

    It is probably a good thing I am only a chemist and not a Rocket scientist. It could be disastrous if a rocket scientists made poor conversion error and something happened to one of the probes <img src=/S/evilgrin.gif border=0 alt=evilgrin width=15 height=15>

    Steve

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    Re: Petrol

    Not when the tanks are designed to not be full. It really shouldn't be an issue (but what do I know, I can't convert gallons to liters <img src=/S/smile.gif border=0 alt=smile width=15 height=15>)

    Steve

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    Re: Petrol

    <img src=/S/confused.gif border=0 alt=confused width=15 height=20> er, uhm <img src=/S/thinks.gif border=0 alt=thinks width=15 height=15> so exactly how does one determine which is the coldest day of the year? Particularly since we have 257 to go!

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    Re: Petrol

    257 coldest days out of the 357 left in this year? <img src=/S/scratch.gif border=0 alt=scratch width=25 height=29> Switzerland isn't that cold, is it?

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    Re: Petrol

    oops TYPO <img src=/S/flee.gif border=0 alt=flee width=25 height=25> <img src=/S/flee.gif border=0 alt=flee width=25 height=25>. No <img src=/S/flags/Switzerland.gif border=0 alt=Switzerland width=18 height=18> isn't cold. It was 9C today and the snow line (0C) is at 2600m. The snow, even up high, is like oatmeal. Got two weeks booked at the end of February and <img src=/S/please.gif border=0 alt=please width=31 height=23> are hoping for better conditions than what we have seen so far.

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