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octane rating?

Discussion in '2nd Gen. Tacomas' started by chicken lips, Dec 12, 2008.

  1. chicken lips

    chicken lips [OP] Well-Known Member

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    Jose Garcia
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    my owners manual was thrown out before i got my truck, so i been wondering what octane rating does toyota recommend for a 07 v6 4.0 truck?
     
  2. Krazie Sj

    Krazie Sj Resident Jackass

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    Regular 87 octane. It'll give you an 8:1 compression ratio.
    If you want you can use Premium and that'll give you a 10:1 compression.

    So long as you're consistent with what you put in, it'll be fine.

    Personally I run Premium.
     
  3. Tacoma02TRD

    Tacoma02TRD Well-Known Member

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  4. tacoskim

    tacoskim Tuned By Gadget

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    premium for maximum performance... but alot of people are running 87. the tick is less noticeable with premium
     
  5. chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Thor

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    4.10 gears, sliders, lots of buttons, and yellow flashing lights on the dash.
    The compression ratio doesnt change when useing a different grade of fuel.
     
  6. Krazie Sj

    Krazie Sj Resident Jackass

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    I just regurgitated what I read on these forums a couple times from various threads. If I've been mislead, I'll shut the hell up and stop misleading other people.
     
  7. chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Thor

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    4.10 gears, sliders, lots of buttons, and yellow flashing lights on the dash.
    No need to "shut the hell up", Im just correcting you. :)
     
  8. Krazie Sj

    Krazie Sj Resident Jackass

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    No worries. But if I don't have anything productive to say, I might as well keep quiet.

    Don't suppose you'd know what they were talking about the changing compression rations then hey?
     
  9. chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Thor

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    I havent heard of an engine that has a variable compression ratio in a production gasoline engine. SAAB intoduced one years ago, but I havent heard anything about it since. A variable compression ratio engine is kinda like the "Golden Egg". It can be done, but its very costly and machanically complex.
     
  10. linkfeeney

    linkfeeney Well-Known Member

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    link the stink!
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    man, regular sure is A lot cheaper... hard for me to fill it super when regular is like $1.44 here in NJ. :)
     
  11. Packman73

    Packman73 ^^^^ 3%er ^^^^

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    Dude! Premium used to be over $4/gallon; $1.77 ain't bad at all. I didn't think we'd see under $2/gallon again...
     
  12. chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Thor

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    X2, and being as 91 is $0.20 a gallon more than 87, I found its cheaper to run the 91 as I get better mpg too.
     
  13. linkfeeney

    linkfeeney Well-Known Member

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    i know... i know.. but the gas got so cheap... it just looks so good!!
     
  14. AK27

    AK27 Well-Known Member

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    i have a question for you guys, i run regular fuel for a while and i commute a lot each day. i have noticed that with reg gas my truck runs a hell of a lot rougher (idles rough, not as good gas mileage, more engine noise, etc). however if i run premium, the rough idle disappears, i get a heck of a lot better gas mileage and then engine noises are less noticeable. could i potentially have an engine issue or just keep with the premium?
     
  15. chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Thor

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    4.10 gears, sliders, lots of buttons, and yellow flashing lights on the dash.
    Just run the preimium. My owners manual actually says "for best performance use priemium fuel".
     
  16. AK27

    AK27 Well-Known Member

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    thanks chris, i figured so. the difference i get in mileage actually makes it cheaper to buy prem then it does to have to fill up more often with reg.
     
  17. chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Thor

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    4.10 gears, sliders, lots of buttons, and yellow flashing lights on the dash.
    thast precisely what I have found. :)
     
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