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News flash from stihl! for you octane haters!

Post in 'The Gear' started by smokinj, May 19, 2011.

  1. smokinj

    smokinj Minister of Fire

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    The Outdoor Power Equipment Institute (OPEI) made its position clear on this issue during recent testimony in front of the House oversight committee on environment and public works. At STIHL our basic recommendation is that fuel be as high an octane rating as possible, at least 89, and contain no more than 10% ethanol. STIHL customers should also be aware that using fuel containing more than 10% ethanol could void the product warranty.




    http://stihlusa.blogspot.com/2011/05/stihl-motomix-offers-convenience-and.html

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  2. CTYank

    CTYank Minister of Fire

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    Sure sounds like Stihl USA wants their customers in a squeeze between feds/EPA, oil companies, and Stihl dealers. Some folks have said that Echo has gotten into that.

    Maybe they could design/build their saws to run reliably with available fuels and/or provide appropriate additives in their engine oil.

    Something's wrong when the big-guys threaten to jump on the little-guys. (How do you know if someone sells you 13% ethanol, vice the 10% on the label?)

    Better the big players work it out and keep the paying customers out of the scrimmage, not try to use them as their lobbying tools.
  3. smokinj

    smokinj Minister of Fire

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    Yep they are throwing darts for sure. Really do not think they could prove it anyways but sure sending a strong message. This really means there taking a beating on saws going down in the first year.
  4. Bigg_Redd

    Bigg_Redd Minister of Fire

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    AvGas = 100 octane + Lead = chainsaw bliss
  5. mayhem

    mayhem Minister of Fire

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    They want us to all go to Wal Mart and buy the pre-mixed stuff in the quart cans at 5x the price of pump gas.
  6. smokinj

    smokinj Minister of Fire

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    No, but stressing at-least 89 octane as mim.
  7. smokinj

    smokinj Minister of Fire

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    That is a great way to go....
  8. Creekyphil

    Creekyphil New Member

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    I'm not familiar with avgas, but a quick google shows many different grades and types. Is there one that you recommend running?
  9. smokinj

    smokinj Minister of Fire

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    This stuff is expensie and can be bought at any small airport. 100 octane without ethanol. If you just run the best can you can find you will be in good shape. I run 93 and 94. There is additives out there to take the ethanol out. The saws being ran on 87 octane and under is where the issue really lyes. Without the ethanol there would not be a problem.
  10. Backwoods Savage

    Backwoods Savage Minister of Fire

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    I think Stihl is just trying to come up with another money maker; those little homeowners that run their saw once every year or two for maybe 20 minutes.
  11. Bigg_Redd

    Bigg_Redd Minister of Fire

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    100LL AvGas. It's the only gasoline I've ever seen sold at airports in WA. I heard 88LL used to be common but no one sells it anymore. Check with a local municipal airport. I bet they have only Jet A (which is basically kerosene) and 100LL AvGas.

    A couple bonuses: 1) AvGas has a very long shelf life, even in a plastic gas can. In a metal gas can it takes years to go bad. 2) It will not gum up your carb the way pump gas will if left sitting for too long. 3) Easier starting - a 5 pull saw becomes a 3 or 4 pull saw. 4) More complete/uniform combustion makes the saw run cooler at a given RPM, AND by the same principal you'll get a few extra RPM. 5) Around here it costs only about $.50 per gallon more than premium and the biggest pain about it is actually going to the airport to get it.
  12. smokinj

    smokinj Minister of Fire

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    At .50 cents more its a NO- Brain-er!
  13. CTBurner

    CTBurner Member

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    The airport near me has AV gas both LL100 and LL80 am i correct in that the LL100 would be best choice for saws
  14. lukem

    lukem Minister of Fire

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    Forgive the ignorance, and if this has been discussed before, but what is it about ethanol that would be hard on a two stroke engine? I know they can be hard on a fuel system (deteriorate plastics and rubbers) but what is the difference when the fuel is in the cylinder?
  15. smokinj

    smokinj Minister of Fire

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    Without going into the science of it (because I cant) It cause piston failure ring and or damage.
  16. lukem

    lukem Minister of Fire

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    Anyone know anything else?

    Alcohol burns cooler than gas, so is it a temperature thing?

    In a 4 cycle engine spark knock/detonation/pinging can occur with poor quality fuel, which leans things out and can burn a hole in the piston if it goes on long enough. Could the same type of thing apply for 2 cycle engines and ethanol?

    There has to be some science behind it. I'm with you Jay...don't disagree with the statement...but sure would like to know why ethanol is bad (don't know the science either).
  17. smokinj

    smokinj Minister of Fire

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    The stihl news letter link at the top of the thread has many supporting links with in the news letter sure the details are there.
    Too long winded for me to write down....lol This is a direct link form stihls news letter.

    http://www.popularmechanics.com/hom...s-from-the-wear-and-tear-of-e10?click=main_sr
  18. oldspark

    oldspark Guest

    I will look for a link but ethanol does not burn cooler.
  19. lukem

    lukem Minister of Fire

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    Thanks Jay.

    Cliff's Notes:

    Results from the use of ethanol, which can cause rust and carbon deposits inside the engine, dissolve plastic parts and more

    Deposits and corrosion aren't the only reasons alcohol is hard on today's small engines. The power plants are easily ruined by bad fuel because they lack the sophisticated computer-controlled ignition systems found in today's cars and trucks. The alcohol can cause the fuel to ignite at the wrong time in the combustion sequence, ruining parts in the process.
  20. lukem

    lukem Minister of Fire

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    Sure it does. That's why it is popular with race cars. Doesn't pack as much punch as gas, but burns a lot cooler.
  21. fireview2788

    fireview2788 Minister of Fire

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    Stihl told me the same thing several months ago when I contacted them to get a manual for my saw. They said a minimum of 89 octane.


    fv
  22. oldspark

    oldspark Guest

    I know that but there is a disagreement on it in two strokes, do a google search and you will find a huge can of worms.
  23. Bigg_Redd

    Bigg_Redd Minister of Fire

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    Yes
  24. fyrwoodguy

    fyrwoodguy Feeling the Heat

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    i'm with you redd...+1
  25. smokinj

    smokinj Minister of Fire

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    How much a gallon does this run? Average is fine.

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