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What Octane Do You Use In Your 4.0L V6?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by scienceguy, Jul 3, 2009.

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What Octane do you use in your 4.0 V6?

  1. 87

    510 vote(s)
    60.1%
  2. 89

    107 vote(s)
    12.6%
  3. 91

    141 vote(s)
    16.6%
  4. 93

    90 vote(s)
    10.6%
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  1. Jul 3, 2009 at 11:45 AM
    #1
    scienceguy

    scienceguy [OP] Active Member

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    Ok, I know this has been beaten down pretty good, but I haven't seen any poles that are engine specific. Obviously, the four and six cylinder motors are quite different, so I am not as concerned about what the 2.7 motors are running, because I think they are pretty rock solid with 87 octane.

    I just purchased a 4.0 V6, and I'm not sure what I'm going to run. I would like to just put in 90+ octane, but there is obvoiusly an increased cost. I've read of 4.0 guys that have great luck with 89 as a happy medium and I've also read of guys (and gals, sorry!) that are just fine with 87. Toyota says 87 is good enough, so it is, but I just want to know what YOU run. If you want, let me know why! Thanks!
     
  2. Jul 3, 2009 at 11:49 AM
    #2
    luk8272

    luk8272 Poodoo

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    I run the highest octane avaliable at the pump. Always. Can't say I actually notice much difference in fuel economy. I do pay close attention to stations that add ethonal, and avoid them.
     
  3. Jul 3, 2009 at 11:59 AM
    #3
    Brunes

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    The rating for the V6 engine has info/results for 87 and 91 octane. Better performance from the 91.

    I use 91...93 occasionally.
     
  4. Jul 3, 2009 at 12:02 PM
    #4
    Janster

    Janster Old & Forgetful

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    87 here..... My commutes are day -to-day, nothing special. I don't need the extra (if any) gains from the more expensive gas. If I was taking a long trip and/or towing something, I'd probably shoot for 89.
     
  5. Jul 3, 2009 at 12:25 PM
    #5
    rab89

    rab89 Well-Known Member

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    What do you guys think of the new "nitrogen" gas from shell?
     
  6. Jul 3, 2009 at 12:29 PM
    #6
    Hoyal

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    I use 85...
     
  7. Jul 3, 2009 at 12:30 PM
    #7
    rab89

    rab89 Well-Known Member

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    85 exists... please stop using it..
     
  8. Jul 3, 2009 at 12:35 PM
    #8
    Hoyal

    Hoyal Whiskey bent and hell bound.

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    No Im good.. Ill still use it I get 20-23 mpg and its the lowest grade CO has we have 85 87 91. Everyone of my friends from brand new tacomas to the 90's tacomas all use it and I have not seen any problems. I used 91 when I had my WRX putting 300 hp to the wheels of awd turbo fun but 85 works for the truck just fine.
     
  9. Jul 3, 2009 at 12:52 PM
    #9
    Yuma Taco

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    Tryed the higher octanes and at this time I did not see an increase in mileage per gallon. So I use 87.


    Yuma Taco,
     
  10. Jul 3, 2009 at 12:55 PM
    #10
    Incognito

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    I'd REALLY try and use what the manual suggests, only for the longest life of your truck. ;)
     
  11. Jul 3, 2009 at 1:04 PM
    #11
    Hoyal

    Hoyal Whiskey bent and hell bound.

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    I have ran 85oct in 2 of my vehicles that I ran well over 130k from brand new.
     
  12. Jul 3, 2009 at 1:10 PM
    #12
    Incognito

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    That's fine, I was just saying... ;)

    BTW, where all do they have 85 OCT at?
     
  13. Jul 3, 2009 at 1:13 PM
    #13
    Hoyal

    Hoyal Whiskey bent and hell bound.

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    I know its better to use the better gas and what not but I have never had a problem and I didnt see a mpg gain using the 91 we have here so I went back to 85 to save some coin seeing how I use a tank of gas every 3-4 days.

    Im in the Denver metro area of CO. But we have 85oct all over the state.
     
  14. Jul 3, 2009 at 1:43 PM
    #14
    SC4333

    SC4333 Well-Known Member

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    85 octane fuel should be fine in Hoyal's situation. As altitude increases, the need for higher octane fuels to prevent detonation decreases.

    I'd say at a mile high hes has nothing to worry about.
     
  15. Jul 3, 2009 at 1:45 PM
    #15
    Incognito

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    Ah, gotcha. Didn't even think about the altitude issue. :eek:
     
  16. Jul 3, 2009 at 1:47 PM
    #16
    EEtaco

    EEtaco Well-Known Member

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    I usually stick with the highest I can get at shell and avoid ethanol when possible.
     
  17. Jul 3, 2009 at 2:06 PM
    #17
    jandrews

    jandrews Carolina Alliance Southwest Region Ambassador

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    91 doesn't exist here, so 93, if only for engine health.
     
  18. Jul 3, 2009 at 2:45 PM
    #18
    Hoyal

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    Never knew that, learn something every day, I was just being a cheap ass :)
     
  19. Jul 3, 2009 at 3:41 PM
    #19
    derekabraham

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    87 mainly.
     
  20. Jul 3, 2009 at 3:44 PM
    #20
    Burgman

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    87 but all the stations around here have 10% ethanol
     
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