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Gas Octane

Discussion in '2nd Gen. Tacomas' started by BreezyTaco, May 9, 2009.

?

Which fuel octane do you use?

  1. 87

    2,147 vote(s)
    64.6%
  2. 89

    448 vote(s)
    13.5%
  3. 91

    763 vote(s)
    23.0%
  4. Other fuel additives

    55 vote(s)
    1.7%
  1. Joe B

    Joe B Well-Known Member

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    93 before and after the supercharger install.
    Usually Shell.
     
  2. wired_af

    wired_af Clever white boy.

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    +1. I calculated it once, I think I was saving nearly $1 per fill up using 91. :cookiemonster:
     
  3. downey

    downey Member

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    Where is 85 octane on the poll for those of us at altitude in colorado??...It's equivalent to 87 at lower altitudes:)
     
  4. OH-MAN

    OH-MAN Well-Known Member

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    If your truck has knock sensors as most modern ones do it retards the timing when it detects it to stop detonation or pinging. Higher octane will allow it to use more timing before the sensor says whoa there pardner.
    So more timing will get you a bit more power.

    We are stuck with only 91 here as many states.
     
  5. bambooshoots

    bambooshoots Be a fountain, not a drain.

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    I did it again. Got tired of paying truck payments and gas and traded in for a 2015 Honda Accord Sport since I enjoyed my 2013 Sport so much.
    I run 93.
    Like other have said, the engine just feels happier with higher octane gas.
    That, and when gas was 3-4 dollars a gallon I would actually save money over the long haul using 93 as opposed to 87.
     
  6. WilsonTheDog

    WilsonTheDog Kylie's dad

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    Ah, so that's how it works: lower octane for higher altitude (believe me, I'm no engineer). I wondered about that.
     
  7. WilsonTheDog

    WilsonTheDog Kylie's dad

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    That is correct, sir.
     
  8. chris4x4

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

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    4.10 gears, sliders, lots of buttons, and yellow flashing lights on the dash.
    Yeppo! The higher the Alt., the less likely your gonna have Knocking issues (pre ignition) as there is less air ( o2 )....:)
     
  9. sdnicker2000

    sdnicker2000 Well-Known Member

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    Where I live we either have 87 with no ethanol or 91 with it. I get better mileage (usually 3-4 mpg over a tank) using the 87. And like one here said "It seems happier" using the non-ethanol. Have found this with both my Tacoma and the wife's Honda Pilot.
     
  10. Krazie Sj

    Krazie Sj Resident Jackass

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    I noticed the same milage between 89 and 91 personally. However, I do notice the engine is more responsive with the higher octane.
     
  11. SC4333

    SC4333 Well-Known Member

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    Detonation, not pre-ignition. :)
     
  12. chris4x4

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

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    4.10 gears, sliders, lots of buttons, and yellow flashing lights on the dash.
    Thank you. :eek:
     
  13. CometKat

    CometKat Well-Known Member

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    There is nothing to notice. It is a calculation. If you do the math you’ll find that you save money (or not). During the gas crunch last summer I saved about a buck per tank. Not much considering a fill up was about $80. However, why run 87 when you can run 91 for a buck less?
     
  14. geoff5093

    geoff5093 Well-Known Member

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    I tried running 93 octane for two tanks and didn't really see a difference, at least not for paying a $0.20 premium every time I fill up. So I run 87.
     
  15. REVHARD25

    REVHARD25 Well-Known Member

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    where do you buy 93 octane? Can we even buy this in CA at a pump station
     
  16. DanGer

    DanGer Avatar approved by 98tacomav6

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    93 is all we have in VA, 87, 89, and 93
     
  17. geoff5093

    geoff5093 Well-Known Member

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    In NH most stations sell 87, 89, and 93. Some sell 91 as well.
     
  18. WilsonTheDog

    WilsonTheDog Kylie's dad

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    Same here. I don't even remember seeing 91.

    HOWEVER, we only have 10% ethanol gas here. I've searched and searched, asked on multiple forums, but it seems that's all that we have in SC.
     
  19. geoff5093

    geoff5093 Well-Known Member

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    Same here, I was never able to find any stations that did not have 10% ethanol.
     
  20. commtrd

    commtrd commtrd

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    Well I will try a tank of 91 (we get that here in TX) especially if it does not have any ethanol in it. Just not having any ethanol is a huge plus. Ethanol does not have the same energy density as does gas. It is also corrosive. Ethanol also hurts fuel mileage. I can see the argument about timing retardation if knock is detected but neither of my V6 engines have ever knocked on acceleration or towing that I could detect. It won't cost a lot to try it anyway.
     
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