chainsaw gas octane ???

Discussion in 'Workshop and Home Improvement' started by Weedhopper, Jan 25, 2010.

  1. Weedhopper

    Weedhopper

    Messages:
    1,000
    Location:
    HUH ? Oh..... CT
    My Husky 41 survived 13 years of hard use here at the house, and finally died.

    I was looking at new Stihl saws and the sales rep told me that I should use high octane gas. Is this true ? I have always used regular. He said it's the ethanol and premium is better for the engine.

    What say Mr. Stihl ?
  2. RavenTai

    RavenTai

    Messages:
    6,085
    Location:
    Dixie co. Florida
    Kinda sorta, ethanol has issues with 2stoke fuel in the presence of moisture but premium usually has the same ethanol as regular, many recommend higher octane for chainsaws not because of ethanol but because of preignition.

    more reading

    http://www.forestnet.com/TWissues/August08/chainsaw.pdf
  3. alia176

    alia176 SILVER Star

    Messages:
    8,498
    Location:
    Tijeras, NM
    My Stihl dealer said to use Avgas because he hates what pump gas is doing to small engines that he fixes. On another note, the same Stihl dealer stopped carrying Stihl saws because I guess they're plastic crankcase (600 hrs) vs steel (1200 hrs)?? Yup, he is a bit of a chain saw fanatic I guess!
  4. RavenTai

    RavenTai

    Messages:
    6,085
    Location:
    Dixie co. Florida
    Be aware that 100LL (Avgas) has a lot of lead in it much more than old leaded gas and you are right on top of it breathing it in, if any of your 2 stoke equipment has a catalytic converter in the muffler the lead will destroy it and eventually plug,

    Those issues aside avgas is wonderful fuel, very high quality and purity per federal regulations,

    I have been running marine fuel in my 2 strokes, one of them has a cat and i don't like the lead exposure, i tested and it is ethanol free, but it is just 87 octane, I have been looking for 94 no lead no ethanol but have not yet found a good solution.
  5. RavenTai

    RavenTai

    Messages:
    6,085
    Location:
    Dixie co. Florida
    sure that was not husqvarna? they went to plastic crank cases on their entry level saws, I was not aware of Stihl doing the same?
  6. CruisinGA

    CruisinGA

    Messages:
    6,152
    Location:
    Georgia Tech
    We found a no ethanol gas station near our lake house, and always bring back a 5 gal can full of no ethanol regular for the chainsaws, blower and weedeater.

    From what I understand, ethanol in fuel is particularly rough on 2 stroke engines and any engine in a marine environment.
  7. alia176

    alia176 SILVER Star

    Messages:
    8,498
    Location:
    Tijeras, NM
    Yup, that's Stihl as evidenced by a display model on his counter.
  8. bigndn

    bigndn

    Messages:
    4,590
    Location:
    Eagle, ID
    Yes. Look around, we finally found that our local Cenex Co-op carries non-ethanol premium. It's the only place for 30 miles. :D
  9. D'Animal

    D'Animal Rescuer of Beagle and Landcruisers Moderator

    Messages:
    20,711
    Location:
    Central California
    SOunds like you dealer was canceled as a dealer for lack of knowledge.

    Ask him which current or previous models of STIHL have a plastice crankcase?


    The answer is 0. :D
  10. D'Animal

    D'Animal Rescuer of Beagle and Landcruisers Moderator

    Messages:
    20,711
    Location:
    Central California
    STIHL, Husqvarna, Echo, Shindiawa, etc, have always recommended 89 octane or higher fuel.
  11. D'Animal

    D'Animal Rescuer of Beagle and Landcruisers Moderator

    Messages:
    20,711
    Location:
    Central California
    LOL

    Get a picture of it and post it.


  12. alia176

    alia176 SILVER Star

    Messages:
    8,498
    Location:
    Tijeras, NM
    Not a bad idea...i'll have to do a phone camera action the next time I'm in the area.

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