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8-gal fill-up - winter gaso blend over?

Discussion in 'Gen 2 Prius Technical Discussion' started by wjtracy, Mar 21, 2017.

  1. wjtracy

    wjtracy Senior Member

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    Got decent 8-gal fill-up in the Gen2 guess tank, first time since Nov. I am thinking this could mean switch over to summer fuel is phasing in. According to EPA summer fuel has 1.7% more energy, so that means we should expect 1.7% better MPG too. Usually costs more, but I think this year speculation bumped up the winter prices, so if the speculation was wrong, could see cheaper gaso this summer. Paid $2.14/gal
     
    #1 wjtracy, Mar 21, 2017
  2. DonDNH

    DonDNH Senior Member

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    It is possible that the transition has started. By EPA regs, the change-over must be completed by 1 June for retailers (except for CA).

    Date of switch to summer-grade gasoline approaches - Today in Energy - U.S. Energy Information Administration (EIA)
     
    #2 DonDNH, Mar 21, 2017
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  3. CooCooCaChoo

    CooCooCaChoo Active Member

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    Yeah, but could be that the fuel bladder is warming up instead tho. Gas prices in California have been going up steadily also. Paid $2.63 at Costco.
     
    #3 CooCooCaChoo, Mar 21, 2017
  4. wjtracy

    wjtracy Senior Member

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    I guess they can start meeting the summer spec anytime they want to as it is more stringent.
    I find even on warm days on winter I cannot get 8 gals, so I am thinking fuel has some role too.
     
    #4 wjtracy, Mar 21, 2017
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