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Have I been using the wrong kind of fuel for my weedwacker and blower?

Discussion in 'Lawn Mowing' started by pattytastik, May 27, 2011.

  1. pattytastik

    pattytastik LawnSite Senior Member
    Posts: 286

    I just read somewhere something that makes me wonder if over the years I have been using the wrong gas mixture. What I use now is 87 octane mixed with powerblend oil (made by echo) for my echo srm weedwacker and my pb-500 blower and echo hedger. Should it be 89 octane instead of 87?

    Thanks
    Posted via Mobile Device
     
  2. Birdhunter1

    Birdhunter1 LawnSite Senior Member
    Posts: 312

    6 years ago i got into internet forums and read I should be using high octane fuels in my 2 stroke Stihl equipment, I guess my Stihl equipment didn't get the memo either because it has always run well.

    I am still using 87 octane, my dad is still using 87 octane on his Echo and Stihl stuff. I use the Stihl 2 stroke oil, he uses the Echo, we each uses each others fuel cans when the are handier to us (Shhh don't tell anyone).
     
  3. pattytastik

    pattytastik LawnSite Senior Member
    Posts: 286

    Great! I was nervous that I was slowly deteriorating my equipment. I'm glad that what I am using is acceptable.
     
  4. Charles

    Charles Moderator Staff Member
    Posts: 7,828

    89 octane is what the manufacturers recommend. Never use 87 in lawn equipment.
     
  5. Km81

    Km81 LawnSite Member
    Posts: 62

    87 Octane was fine until the ethanol came into play. All manufacturers recommend 89 or higher now.
     
  6. Penncare

    Penncare LawnSite Member
    Posts: 179

    I like to run 105 racing fuel in mine. Once cut down a three inch pine tree with it. Really I think it makes little difference at all.
     
  7. FlemingIslandLawnService

    FlemingIslandLawnService LawnSite Member
    Posts: 87

    You might actually be doing your engine some harm. 89 at the minimum is recommended but I always go with premium to make my equipment last longer. I always put 87 in my truck though because automobiles don't have such small and sensitive engines like trimmers do
     
  8. pattytastik

    pattytastik LawnSite Senior Member
    Posts: 286

    OK so i guess i'll switch to 89 octane. Walk behinds still use 87 right?
     
  9. FlemingIslandLawnService

    FlemingIslandLawnService LawnSite Member
    Posts: 87

    yes and yes. also, just making sure that you are aware that you need to mix in 2 cycle oil for your trimmers/edgers/blowers, but not for your lawn mowers
     
  10. pattytastik

    pattytastik LawnSite Senior Member
    Posts: 286

    haha of course. I use the powerblend made by echo. I know i sound like a newbie but i was looking over the manual (found it in the bottom of a drawer) and I was shocked to see it say 89 as opposed to 87.
     

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