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What grade fuel in trimmers???

Discussion in 'Lawn Mowing' started by GTLC, Sep 2, 2005.


What grade gas in 2-strokes???

  1. Regular 87

    18 vote(s)
  2. Premium 89

    13 vote(s)
  3. Super 93?

    6 vote(s)
  1. GTLC

    GTLC LawnSite Senior Member
    Messages: 700

    The Stihl manual says 89 octane gas or greater, but i've been mostly using regular.

    What do you use???
  2. Brianslawn

    Brianslawn LawnSite Silver Member
    Messages: 2,004

    50:1 mix :p
  3. dvmcmrhp52

    dvmcmrhp52 LawnSite Platinum Member
    from Pa.
    Messages: 4,205

    We run all Stihl equipment.
    89 octane as the manual calls for.
  4. ToroLandscaper

    ToroLandscaper LawnSite Bronze Member
    Messages: 1,177

    With fuel so expesnive thats all i will run in my stuff
  5. befnme

    befnme LawnSite Bronze Member
    Messages: 1,413

    Yesterday Here Any Grade Was 2.99 So I Tried 89 Octane.it Seems To Burn Slower.
  6. a a green

    a a green LawnSite Member
    Messages: 116

    the higher the octane the longer it takes to combust, therefore it burns hotter. I use just regular. it isnt like they are really high compression engines.
  7. grass_cuttin_fool

    grass_cuttin_fool LawnSite Gold Member
    Messages: 3,526

    I have used 87 octane for years but recently switched to 89 octane, the trimmers seem to run a little better or maybe its just my imagination
  8. Ron's Lawncare

    Ron's Lawncare LawnSite Senior Member
    Messages: 266

    Echo recomends 89 octane so that is what we run in all 2 cycle engines.

  9. ed2hess

    ed2hess LawnSite Fanatic
    Messages: 14,279

    Too costly to run high grades and very difficult to get two grades of gas at pumps since they won't leave you use card twice at the same time. Add a little sea foam and that will offset use of the lower grade.

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