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    GreenPri2009 New Member

    Member Since:
    May 25, 2009
    Message Count:
    42
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    1
    Location:
    Alexandria, Va.
    Your Vehicle Year:
    2009 Prius
    Model:
    N/A
    If I may be so ignorant, I see many threads regarding the internal bladder in the fuel tank but have no idea what this means? How is this different from non-hybrid fuel tanks?

    Love this forum for all my endless questions!
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    • Moderator

    Paradox Prius Enthusiast / Moderator

    Member Since:
    Sep 22, 2005
    Message Count:
    5,907
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    1,081
    Location:
    NYC
    Your Vehicle Year:
    2012 Prius Plug-in
    Model:
    Plug-in Advanced
    Most regular cars have a rigid fuel tank, while the 2004-2009 Prius has this internal bladder. The bladder contracts and expands which leaves less air over the top of the fuel minizing fuel evaporation, which can escape during a fill up.

    The new 2010 Prius does not have the bladder anymore as it was a nuisance how in cold weather the bladder did not expand as much and less fuel was allowed to be put in like summer/warmer months. Also, Europe I beleive never had the bladder...
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    halpos4 "Taxi"!

    Member Since:
    Aug 13, 2008
    Message Count:
    377
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    23
    Location:
    Ireland
    Your Vehicle Year:
    2006 Prius
    You're correct Paradox,no bladder on Euro Prius.....Thank God!
    As a Taxi driver filling up a few times per week,i think i would have lost the plot!!

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