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What octane should I use?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by aces2, Jun 18, 2008.

  1. Jun 18, 2008 at 9:42 AM
    #1
    aces2

    aces2 [OP] Senior Arshole

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    I have a 4.0 v6, what octane should I be using? From what I'm seeing in the owner's manual it says any... correct or not?
     
  2. Jun 18, 2008 at 9:47 AM
    #2
    j4x4ar3

    j4x4ar3 Well-Known Member

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    Correct.. use what works best for you not only the the wallet but for your driving needs.

    Regular for me proved to knock to much and I went with mid-grade for daily driving. Get the occassional knock on those really really hot days but it's rare.

    I put premium in when I'm pulling my travel trailer (5000#) to get the best performance possible from the engine and reduce the knock completely. Manual recomends premium for best performance as well. Numerous threads out here with explainations for everything.
     
  3. Jun 18, 2008 at 10:17 AM
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    bounrith

    bounrith Well-Known Member

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    I got customer who works for ARCO and they would only put lowest grade for city street driving but will go mid grade or premium for a long trip.

    Tacos require only 89 octane.
     
  4. Jun 18, 2008 at 3:02 PM
    #4
    tacomaman06

    tacomaman06 Carolina Alliance: Enforcer

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    getting there....
    i have found that there is nothing wrong with 87, although i got a little spark knock with it, but mid-grade and premium yeild a little better performance, and i cant really tell the 2 apart, so i run mid grade all the time now. mileage is good with the mid or premium too.
     
  5. Jun 18, 2008 at 3:13 PM
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    Asgard

    Asgard Well-Known Member

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    When I first bought my truck I used 87 octane, about a couple months ago my mechanic recommended 90 octane (only two available) so I switched. I notice the engine runs smoother and quieter, also you hardly hear that annoying ticking sound the engine makes. I'm sure I read somewhere Toyota recommended 91 octane for the Tacoma.
     
  6. Jun 18, 2008 at 3:15 PM
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    tacomaman06

    tacomaman06 Carolina Alliance: Enforcer

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    getting there....
    gotta agree......they are alot smoother running with higher octane:)!
     
  7. Jun 18, 2008 at 6:58 PM
    #7
    aces2

    aces2 [OP] Senior Arshole

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    Awesome. Yeah, I hear that light knocking sound when I'm going about 20 mph and my passenger window is down. I hear it bouncing off random objects and projecting back into the cab.

    The whole reason for me to ask this question originally was that I'm only getting about 14 miles per gallon at the moment. I was at class this evening and was talking with one of my classmates. He had said that since I only have about 750 miles on my truck, the engine has alot of braking in to be done, but then after that, my gas mileage will go up 3-4 miles per gallon. This sounds legit, but is there any truth in it?
     
  8. Jun 18, 2008 at 7:03 PM
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    tacomaman06

    tacomaman06 Carolina Alliance: Enforcer

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    getting there....
    yeah, definitely. as the engine breaks in......you mileage will increase, enough that you can see a good improvement.:)
     
  9. Jun 18, 2008 at 7:06 PM
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    Janster

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    I've run 87 since day 1 - never noticed any problems. If gas wasn't so damn expensive, I'd treat 'er to higher octane. But - I drive to/from work and around town mostly and that's it. Not worth spending $$ for the good stuff.
     
  10. Jul 10, 2009 at 4:18 AM
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    coma09

    coma09 Senior Member. Hey, what's That supposed to mean?

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    Drove from Toronto to Ft Lauderdale & back.... Started with 87 for half the trip down. 2 adults, and enough load to make the springs sag 2".
    Truck ran great. Switched to mid-grade, and I thought I noticed a small difference in smoothness. Fuel economy about the same.
    Half-way back I switched to regular.
    Here I noticed the engine was noisier - and you had to really put your foot into it to downshift (auto). Didn't seem to have as much power on the hills. 5 hours of driving later I switched back to mid grade ... noticeable improvement in hills and more 'willing' to go.
    I know this is subjective. For daily driving I doubt I'd ever notice. There was definitely a difference for the positive, running 89 over 87 on highway use.
    The difference was quite noticeable when going from mid to regular. Once you've driven days on 89, then switch - it was very apparent.
    I'll stick to 87 I think (cheaper) for regular driving @ home
     
  11. Jul 10, 2009 at 4:25 AM
    #11
    Burgman

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    i use 87 as 89 is 10 cents more a gallon, but if i see 1 mpg inc. then it would actually cost the exact same... hmmm, will try 89 at next fillup... and premium 93 is way to damn expensive to try
     
  12. Jul 10, 2009 at 7:32 AM
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    surfsupl

    surfsupl Well-Known Member

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    89 here...............like others when you run 87 you get more engine noise and the engine seems to run a little rough.........w/89 I don't get the knocking and get the smoother ride. I don't think my truck has ever had 92 in it............It all boils down to driving conditions and your personal mindset...........:D

    Oh................and god forbid that any of you let your low fuel light pop on thinking its hard on the truck some how :frusty:.............. ...............:rofl::rofl::rofl:
     
  13. Jul 10, 2009 at 7:36 AM
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    Janster

    Janster Old & Forgetful

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    Why would you doubt your owners manual?
     
  14. Aug 2, 2009 at 1:06 PM
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    ktmrider

    ktmrider Senior Member

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    unless your engines poping, or premature detonation i wouldnt use a higher octaine
     
  15. Aug 2, 2009 at 3:37 PM
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    WilsonTheDog

    WilsonTheDog Kylie's dad

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  16. Aug 2, 2009 at 4:27 PM
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    Incognito

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  17. Aug 2, 2009 at 5:32 PM
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    WilsonTheDog

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    I just realized this thread was a month old. Let's euthanize it.
     
  18. Aug 2, 2009 at 6:01 PM
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    Incognito

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