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General Chat Thread, Petrol Cheaper in the morning in General; Don't know if anyone else has seen this, only really noticed a week or so ago. I drive past two ...
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    teejay's Avatar
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    Petrol Cheaper in the morning

    Don't know if anyone else has seen this, only really noticed a week or so ago. I drive past two petrol stations on my way to work and in the morning the petrol is alway 1p cheaper than the afternoon. Price has always gone back down by the 1p by the next morning, unless of course there has been a price rise (if that makes sense!)

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    plexer's Avatar
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    They have to set their price for the fuel when it's delivered. Guess they must get their delivery after you drive past.

    Ben

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    teejay's Avatar
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    But it goes back down the for the next morning, all last week it was 125.99 in the morning and 126.99 in the afternoon

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    m25man's Avatar
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    You are stuck in a Groundhog day... snap out of it!

  5. Thanks to m25man from:

    teejay (17th January 2011)

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    limbo's Avatar
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    Is it a 2 sided sign that is different on both sides, so it is different depending on which way you drive past?

  7. 2 Thanks to limbo:

    SimpleSi (17th January 2011), teejay (17th January 2011)

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    teejay's Avatar
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    This is really beginning to bug me now, again this morning 1p cheaper than Friday evening. Will have to pop into one of them to find out why....

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    Quote Originally Posted by teejay View Post
    This is really beginning to bug me now, again this morning 1p cheaper than Friday evening. Will have to pop into one of them to find out why....
    same here every morning shell garage 1p cheaper in morning than afternoon

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    sonofsanta's Avatar
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    Top Gear reckoned (not that that's scientific, [I]but.../I]) that it was worth getting your petrol first thing in the morning anyway, when it's colder. therefore liquid is denser, therefore my fuel for your pennies.

    I reckon it's worth getting my petrol in the morning because that way I can pick up a little milk for my teas through the week.

  11. #9

    creese's Avatar
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    Quote Originally Posted by sonofsanta View Post
    Top Gear reckoned (not that that's scientific, [I]but.../I]) that it was worth getting your petrol first thing in the morning anyway, when it's colder. therefore liquid is denser, therefore my fuel for your pennies.
    Surely the depth of the tank means that the liquid temperature is fairly constant? or not?

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    Gatt's Avatar
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    Quote Originally Posted by sonofsanta View Post
    therefore my fuel for your pennies

    how many of my pennies do I need to part with for your fuel

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    limbo's Avatar
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    Surely the depth of the tank means that the liquid temperature is fairly constant? or not?
    The warmer it is the more of the fuel turns to vapour and is lost into the air while being put into the tank, or something like that.

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    soveryapt's Avatar
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    Quote Originally Posted by creese View Post
    Surely the depth of the tank means that the liquid temperature is fairly constant? or not?
    I have a borehole for water, and the top of the borehold is literally the depth of a small manhole cover and whilst I had a frozen pipe just about the surface, in this manhole cover, the water wasn't frozen (despite the fact I used up a gas cannister on a large patio heater to unfreeze the manhole cover when we had some issues).

    So, although it's not petrol in my borehole (or I really hope it isn't! lol) that I'm guessing a similar principle applies and that the tanks are probably not hugely effected by above ground temperature changes ..

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    Quote Originally Posted by limbo View Post
    The warmer it is the more of the fuel turns to vapour and is lost into the air while being put into the tank, or something like that.
    And that is my useful fact for the day.

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    creese's Avatar
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    Quote Originally Posted by limbo View Post
    The warmer it is the more of the fuel turns to vapour and is lost into the air while being put into the tank, or something like that.
    I think people are saying that the liquid in the tank is more dense. Fuel density travelling through the pipe into the car would be negligible.

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    soveryapt's Avatar
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    Quote Originally Posted by limbo View Post
    The warmer it is the more of the fuel turns to vapour and is lost into the air while being put into the tank, or something like that.
    But see, that would probably make sense too .. so the liquid would be constant temp, but you would probably lose more in the filling, but that has to be an amount that probably isn't worth counting in the first place?



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