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Gas Octane

Discussion in '2nd Gen. Tacomas (2005-2015)' started by BreezyTaco, May 9, 2009.

?

Which fuel octane do you use?

  1. 87

    2,159 vote(s)
    64.4%

  2. 89

    454 vote(s)
    13.5%

  3. 91

    773 vote(s)
    23.1%

  4. Other fuel additives

    57 vote(s)
    1.7%
Page 43 of 51
  1. Jan 9, 2013 at 1:17 PM
    #841
    ElTacoCaliente

    #841
    ElTacoCaliente Well-Known Member

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    I put 91 but, I use 93, can't find 91 anywhere around here.
     
    ElTacoCaliente, Jan 9, 2013
    #841
  2. Jan 9, 2013 at 3:07 PM
    #842
    mlew

    #842
    mlew Member

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    I thought the computer would adjust the timing to prevent ping.
     
    mlew, Jan 9, 2013
    #842
  3. Jan 9, 2013 at 4:12 PM
    #843
    P9HST2

    #843
    P9HST2 Well-Known Member

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    I believe it does up to a point. After that point, with low octane gas, it can't or won't compensate. That's my thoughts...
     
    P9HST2, Jan 9, 2013
    #843
  4. Jan 9, 2013 at 6:01 PM
    #844
    DBTaco

    #844
    DBTaco Well-Known Member

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    I think my gas light was about to come on yesterday so i stopped at the shell and put 10 gallons of 93 premium in my truck. Usually i put the 87 grade of sheetz gas. Im not sure if its in my head or what but it seems that my truck ran smoother than usual. But i havent had my truck but a month so i dont know
     
    DBTaco, Jan 9, 2013
    #844
  5. Jan 10, 2013 at 7:52 AM
    #845
    B11

    #845
    B11 Well-Known Member

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    Is now SuperCharged
    Shell's premium gas used to be Ethanol free but now, it too, is a blended fuel. I think I did read that Shell Premium in Canada is still pure gas though.
     
    B11, Jan 10, 2013
    #845
  6. Feb 20, 2013 at 12:23 PM
    #846
    neonlazer

    #846
    neonlazer Mechanically Goofy

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    Ok I feel lazy to read this entire thread. Just found out anyone can buy gas next door and they sell ethanol free gas...so I assume I should get gas there from now on? :p
     
    neonlazer, Feb 20, 2013
    #846
  7. Mar 11, 2013 at 7:25 PM
    #847
    cotaco05

    #847
    cotaco05 Well-Known Member

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    I've been running 85 and just put my first tank of 91 in (going to try it for 3-5 fill ups) to see if my mpg varies enough to save me a few bucks.
    Since filling with 91, I seem to notice the truck running "easier" on the freeway.
    Probably the same as it being faster after I wash it (all in my head)
     
    cotaco05, Mar 11, 2013
    #847
  8. Mar 12, 2013 at 7:09 PM
    #848
    CantSitStill

    #848
    CantSitStill Well-Known Member

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    Since ScanGauge install;
    Same 60 mile trip that i make werkly, being very mindful to try to drive the same... No difference in MPG between 87 and 91

    91 only makes idle a bit smoother
     
    CantSitStill, Mar 12, 2013
    #848
  9. Mar 15, 2013 at 11:27 AM
    #849
    The_Hodge

    #849
    The_Hodge Volunteer Moderator

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    Seeing the third gen section forced me to get a Ford...
    it takes more than one tank for the ECU to adjust.
     
    The_Hodge, Mar 15, 2013
    #849
  10. Mar 15, 2013 at 11:28 AM
    #850
    dexterdog

    #850
    dexterdog My pee parts itch

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    Ethanol content can vary state to state beyond what is federally mandated.
     
    dexterdog, Mar 15, 2013
    #850
  11. Apr 3, 2013 at 2:11 PM
    #851
    gwos25

    #851
    gwos25 Well-Known Member

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    I just towed a 6500 lb trailer over 3000 km in my 2012 dcsb, 6MT. Tracked my mileage along the way and tried prem vs reg to see if there was a difference. Here's what I noticed.
    Best recorded mileage was on regular, 11.4 mpg. Worse was 8.7, average over the whole trip was 10.5. After experimenting for awhile, I stuck with regular cause I couldn't stomach paying 1.50+ a liter for premium in northern ontario. I couldn't feel any difference in power using the prem. Now, the hp increase due to the elevation change from calgary to ontario was vastley apparent.
     
    gwos25, Apr 3, 2013
    #851
  12. Apr 8, 2013 at 2:29 PM
    #852
    Hammock

    #852
    Hammock Member

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    Up here in north Alberta, Shell's 91 is indeed ethanol free. Ethanol content is higher as the octane rating goes down.
     
    Hammock, Apr 8, 2013
    #852
  13. Apr 9, 2013 at 4:16 PM
    #853
    CASTRATE

    #853
    CASTRATE Well-Known Member

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    I ran 87 until recently. I figured I would give 91 a try, and noticed a smoother idle, slightly better mileage, and the truck feels like it has a little more umph when I goose it
     
    CASTRATE, Apr 9, 2013
    #853
  14. Apr 22, 2013 at 12:14 AM
    #854
    S.B.

    #854
    S.B. Well-Known Member

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    Sean
    San Diego
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    LT, Glass, CBI Front bumper, NWTI Rear bumper, 35s
    At this elevation (6000'+) I ran 85 loaf and jug gas (cheap stuff) and it started knocking when I got on it, so now I only use Shell 91 or chevron 91 (usually cause I fill up in Flagstaff on my way to cali). I hate knocking!

    In San Diego (before I came here to colorado) I used to run just 87.

    Even though this is kinda backward from what is supposed to happen: My truck is pickier in higher elevation then at sea level and it gets the best mileage with 91 vs. 85 or 89.
     
    S.B., Apr 22, 2013
    #854
  15. Apr 22, 2013 at 5:56 AM
    #855
    Creemore

    #855
    Creemore Well-Known Member

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    Just swapped the Taco for a Tundra Crewmax Platinum, so I'm obviously too stupid to worry about mileage, but I thought this would be a useful bit of data for the conversation.

    My Tacoma ran exclusively on ethanol-free premium. Over just short of 40,000 miles in the three years I used the Road Trip app, it averaged 19.5 miles to the US gallon (better in summer, worse in winter).

    FWIW. Enjoy your trucks, lads.
     
    Creemore, Apr 22, 2013
    #855
  16. Apr 25, 2013 at 12:54 PM
    #856
    2013TuRD

    #856
    2013TuRD Well-Known Member

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    87 for the Taco
    91 for the Gixxer 750
    94 for the Turbo Miata

    In all cases the lowest octane that results in no detonation. Knocking is the sound of parts in your engine trying to get out.
     
    2013TuRD, Apr 25, 2013
    #856
  17. Apr 25, 2013 at 1:03 PM
    #857
    BnbBlitz

    #857
    BnbBlitz Well-Known Member

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    premium all day
     
    BnbBlitz, Apr 25, 2013
    #857
  18. May 6, 2013 at 4:48 PM
    #858
    peiscooter

    #858
    peiscooter Well-Known Member

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    No difference in mpg between 91 & 87 observed here.
     
    peiscooter, May 6, 2013
    #858
  19. May 6, 2013 at 7:19 PM
    #859
    mullet

    #859
    mullet Member

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    Non ethanol 91
     
    mullet, May 6, 2013
    #859
  20. May 6, 2013 at 8:07 PM
    #860
    jrubicon

    #860
    jrubicon Well-Known Member

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    im one of the few running 89. its the reasonable compromise between 87 and 91.
     
    jrubicon, May 6, 2013
    #860
Page 43 of 51

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