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87 Octane??

Discussion in 'Lawn Mowing' started by STIHL GUY, May 21, 2008.


    STIHL GUY LawnSite Fanatic
    from CT
    Posts: 5,225

    I have a Stihl stick stimmer and a leafblower and i have been running them with 87 octane gas. Is this OK or should i use 89 or 93?
  2. billslawn89

    billslawn89 LawnSite Bronze Member
    Posts: 1,364

    thats what i use, but the oil i use is the synthetic. i've read other lco's uses the higher grade. i've had no problems thus far.
  3. Precision Lawns

    Precision Lawns LawnSite Senior Member
    Posts: 283

    I use 93. Just always have.... This post may make be rethink this.....;)
  4. BillyRgn

    BillyRgn LawnSite Member
    Posts: 248

    i have neer run anything but 87
  5. BillyRgn

    BillyRgn LawnSite Member
    Posts: 248

    ment to spell ->never*
  6. cgaengineer

    cgaengineer LawnSite Fanatic
    Posts: 15,782

    87 for me as well. I think I ran 1 tank of 93 when I first got the Stihls but after that its 87 for everything.
  7. jkason

    jkason LawnSite Senior Member
    Posts: 548

    If you check the OWNER'S MANUAL, it states that you need a minimum of 77 octane.

    Why spend more than you have to on fuel?
  8. DA Quality Lawn & YS

    DA Quality Lawn & YS LawnSite Fanatic
    Posts: 8,896

    Per below, agreed.
    Why spend more already supremely overpriced fuel.

  9. topsites

    topsites LawnSite Fanatic
    Posts: 21,653

    Because premium's 4 bucks even and this makes the math easy. :p
    I run premium in everything, I don't even question this.
  10. dballs

    dballs LawnSite Member
    Posts: 22

    My Stihl blower manual says minimum octane of 89. I wondered if 87 would hurt it too but just decided to stick with the 89 to be safe.

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