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Gas milage went downhill

Discussion in 'Gen 2 Prius Fuel Economy' started by F8L, Oct 9, 2006.

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  1. silentak1

    silentak1 Since 2005

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    Does anyone know if there is a FALL gas formula?

    I'm aware that there is WINTER and SUMMER formulas that affect MPG.
     
    #21 silentak1, Oct 10, 2006
  2. F8L

    F8L Protecting Habitat & AG Lands

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    <div class='quotetop'>QUOTE(SSimon @ Oct 10 2006, 01:09 PM) [snapback]330813[/snapback]</div>

    I did but I didnt notice much of a milage change with them. I was still regulalry gettign 46-47mpg. They weigh about 2lbs more each than stock.
     
    #22 F8L, Oct 11, 2006
  3. efusco

    efusco Moderator Emeritus
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    <div class='quotetop'>QUOTE(F8L @ Oct 10 2006, 11:24 PM) [snapback]331013[/snapback]</div>
    What....that's clearly the thing. Maybe you didn't notice an initial drop, but, as with all things there are so many variables that can account for small changes in FE good or bad. But with time you start to see the trend. You should've mentioned that in the first post of the thread.

    I'm quite confident that this is enough to account for the drop you're seeing...not only the weight, but the increased rolling resistance as well. Not knowing the diameter/width, etc. it's hard to say how much that might factor in as well.
     
    #23 efusco, Oct 11, 2006
  4. F8L

    F8L Protecting Habitat & AG Lands

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    <div class='quotetop'>QUOTE(efusco @ Oct 11 2006, 06:14 AM) [snapback]331078[/snapback]</div>
    Even after thousands of miles with very little change then it suddenly starts to drop? Tire diameter is the same as stock.
     
    #24 F8L, Oct 11, 2006
  5. jburns

    jburns Senior Senior Member

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    <div class='quotetop'>QUOTE(eagle33199 @ Oct 10 2006, 03:15 PM) [snapback]330779[/snapback]</div>
    Sounding more like a woman every day! :lol:
     
    #25 jburns, Oct 22, 2006
  6. F8L

    F8L Protecting Habitat & AG Lands

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    Well after a tank full of inhector cleaner and slowing down to 65mph average I saw 50mpg on the first half tak of gas but the computer read 47mpg. I then filled up and headed to the Bay Area and after that trip the computer is sitting at 47.8mpg and according to miles driven and where the gas guage sits I'd say its about right.

    My tire pressure is about 50/48 right now after 20min on the freeway.
     
    #26 F8L, Oct 22, 2006
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