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14.5 mpg when i drive like a grandma!? wth..

Discussion in 'Technical Chat' started by Tacomatrd2010, Apr 25, 2011.

  1. Apr 25, 2011 at 6:55 PM
    #1
    Tacomatrd2010

    Tacomatrd2010 [OP] Well-Known Member

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    iv had my 2010 taco now for a year now and iv never got better than 14.5 mpg on the hwy driving 75mph, iv been using 91 octane fuel as well. the owners manual says to use 87 or better so dose using 91 have anything to do with it?[​IMG]
     
  2. Apr 25, 2011 at 6:56 PM
    #2
    FlawedXJ

    FlawedXJ mall crawlin', web wheelin', concrete cowboy

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    Lifted? I just got 16.5 with bigger tires and I wasn't pleased.
     
  3. Apr 25, 2011 at 6:56 PM
    #3
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    FlimFlubberJAM
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    4.10 gears, sliders, and lots of buttons.
    Drop it to 87 and see how it goes.
     
  4. Apr 25, 2011 at 6:57 PM
    #4
    ckeeton

    ckeeton Bazinga

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    no positive, but i think i read on here that it only helps by like .5 mpg. really doesnt effect it.

    correct me if im wrong
     
  5. Apr 25, 2011 at 6:58 PM
    #5
    Superx2

    Superx2 Well-Known Member

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    87 did some serious good for me. my last tank in town was 15.7! i was so happy :D
     
  6. Apr 25, 2011 at 6:59 PM
    #6
    Tacomatrd2010

    Tacomatrd2010 [OP] Well-Known Member

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    ARB bull bar,wheather tech mats,trail fx low pro toolbox,dynomax super turbo muffler,
    still 100% stock....
     
  7. Apr 25, 2011 at 7:02 PM
    #7
    1Bigbird

    1Bigbird Yo! Wat up peeps?

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    Using my Scangauge I found that driving at 65 I got my best mileage!
    2010 4.0 D-Cab Manual
     
  8. Apr 25, 2011 at 7:08 PM
    #8
    Superx2

    Superx2 Well-Known Member

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    if you were asking me... yep. i keep my rpm's below 2,000 and i hardly get on it. i wasnt happy with the gas mileage, when i first got it, but its getting alot better!
     
  9. Apr 25, 2011 at 7:08 PM
    #9
    TacoDawgfan

    TacoDawgfan Hunker Down You Hairy Dawg!

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    :notsure: I've had mine 3 months now and have averaged 18.5 for the most part. Got just over 19 the last 2 fill ups. I dont drive a lot of hwy either but do try to stay under 70 when I do. I drive fairly easy and run 87.
     
  10. Apr 25, 2011 at 7:09 PM
    #10
    MountainEarth

    MountainEarth Well-Known Member

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    Doesn't sound right at all. Here on the Front Range, I fill up with regular (85 octane this side of the divide). Dealer told me 85 was just fine because of the altitude. I've added a shell, light bar with a couple PIAAs and BFG All Terrains in stock size (265/70R16) .. a more agressive tread and heavier than the stock Rugged Trails. Also probably have 100lbs of gear in the truck at all times, and I'm seeing better than 18 mixed driving in a 2010 Access Cab automatic .. not that different from your DC. And I'm at 8650 feet.
     
  11. Apr 25, 2011 at 7:14 PM
    #11
    Apricotshot

    Apricotshot Well-Known Member

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    I've been averaging 19.5 for the past few weeks I have had the truck. 70MPH and do not accelarate super fast. 61 miles a day mostly hwy. Bone stock dbl cab V6. I put a tonneau cover on it last week. Dont know if that will help though.
     
  12. Apr 25, 2011 at 7:16 PM
    #12
    Superx2

    Superx2 Well-Known Member

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  13. Apr 25, 2011 at 7:16 PM
    #13
    MountainEarth

    MountainEarth Well-Known Member

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    A tonneau cover will help.
     
  14. Apr 25, 2011 at 7:22 PM
    #14
    supralight

    supralight Well-Known Member

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    are your trips very short?

    Short trips KILLS your mileage. When going to the restaurant near the job, sometimes I get as low as 10MPG on the average of the short trip.

    Also, keep the HWY speed down to 65 for maximum gains
     
  15. Apr 25, 2011 at 7:53 PM
    #15
    Tacomatrd2010

    Tacomatrd2010 [OP] Well-Known Member

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    maybe it has too do with the tech at the dealer starting it with no oil in it!..? i drive around 200 miles round trip a day too work and 90% of its hwy. guess all try 87 octane 2morrow and see how that works.. i know driving slower would help but that is just not an option;)[​IMG]
     
  16. Apr 25, 2011 at 7:54 PM
    #16
    Tacomatrd2010

    Tacomatrd2010 [OP] Well-Known Member

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  17. Apr 25, 2011 at 7:55 PM
    #17
    fletch aka

    fletch aka www.BeLikeBrit.org

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    Might be your altitude. :notsure:
     
  18. Apr 25, 2011 at 10:07 PM
    #18
    MountainEarth

    MountainEarth Well-Known Member

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    I would guess I'm higher up than the OP (8650 feet). Also I drive a ton of short trips. Still above 18mpg with just over 6100 total miles on the odometer. I definitely drive like a grandma though. Have an Ultra Gauge that I pay great attention to.
     
  19. Apr 25, 2011 at 10:31 PM
    #19
    A7XTaco

    A7XTaco Member

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    Thats crazy! My new 2011 TRD OR couldn't get that bad of mileage unless I constantly had it on the floor.

    I've actually gotten 23MPG at 70MPH. I average 19-20 though. The worse I've gotten is 17, and that was 70MPH against a constant 20MPH head wind.

    See about replacing your MAF Sensor. When I cleaned it in my 06 it made a huge improvement in my mileage... Maybe yours is defective.
     
  20. Apr 25, 2011 at 10:37 PM
    #20
    808matt

    808matt Well-Known Member

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    spark plugs?
     
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