What grade gas do you guys run in your 2 stroke equipment

Discussion in 'Industry Surveys & Polls' started by coreyod21, Jul 26, 2012.


WHat grade gas do you use with your 2 stroke handhelds?

  1. 87 Regular

    62 vote(s)
  2. 89 Plus

    34 vote(s)
  3. 92 Premium

    62 vote(s)
  1. cgaengineer

    cgaengineer LawnSite Fanatic
    Messages: 15,778

    You got it backwards Larry....
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  2. GMLC

    GMLC LawnSite Platinum Member
    Messages: 4,345

    Premium here. Equipment runs cooler and cleaner.
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  3. Mudly

    Mudly LawnSite Member
    Messages: 141

    Um 93 would make a larger explosion causing the engine to run hotter. Your argument hold no water. Not detrimental to the motor just hotter.
  4. cgaengineer

    cgaengineer LawnSite Fanatic
    Messages: 15,778

    Wrong...research it.
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    hort101 likes this.
  5. Tizzy

    Tizzy LawnSite Senior Member
    Messages: 383

    you do know the octane rating on fuel is its resistance to burn right. it has absolutely no bearing on how hot the fuel runs. it literally just means it harder to ignite at high pressure. which is why higher octanes have to be run in high performance engines.

    which is why it is recomended to run higher octane in small engines due to the fact that regular can ignite pre maturely under high temp/high compression applications. thus causing engine damage to smaller weaker components in small engines. 93 octane is designed to not ignite before the spark plug actually ignites it. while in certain situations 87 can self ignite durring compression.
  6. crowecut

    crowecut LawnSite Member
    Messages: 2

    Well explained Tizzy. I for one many years ago did not understand octane ratings either. When I would occasionally try high octane fuel in my vehicles with absolutely no noticeable performance gain....I was perplexed. Years later I understand that my vehicles were designed to run on 87 octane and most likely would never benefit from anything higher.

    I use 87 in all of my lawn equipment. I have tried 89 in my Red Max trimmer and Husqvarna blower and cant tell any difference.
  7. ef200098

    ef200098 LawnSite Member
    Messages: 131

    87. Dont feel like paying the difference. Fuel is already expensive enough.
  8. CraigPLC

    CraigPLC LawnSite Member
    Messages: 194

    Yeah... Stihl recommends 89 with no more than 10% ethanol. According to Stihl 87 octane will make the engine run hotter.
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  9. cgaengineer

    cgaengineer LawnSite Fanatic
    Messages: 15,778

    Tried some 93 this go around, so far I don't see or feel a difference.
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  10. jsslawncare

    jsslawncare LawnSite Bronze Member
    Messages: 1,673

    87 in everything.

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