Chainsaw gas octane, what do you really need ??

HDRock Posted By HDRock, Jan 2, 2013 at 8:54 PM

  1. bluedogz

    bluedogz
    Minister of Fire 2.
    NULL
    

    Oct 9, 2011
    1,247
    258
    Loc:
    NE Maryland
    I have had good luck using the blue Sta-bil (marine stuff.) Didn't own my Stihl long enough to say but work like a cvharm in my mowers and weedeaters.
     
  2. JustWood

    JustWood
    Minister of Fire 2.
    NULL
    

    Aug 14, 2007
    3,596
    505
    Loc:
    Arrow Bridge,NY
    A friend of mine hauls gas/diesel for the refinery here. They have to "dip" test all station tanks for water before every fill.
    He's told me that since this area has gone to ethanol that there is little to no water in station tanks now vs. before.
     
    Backwoods Savage likes this.
  3. Butcher

    Butcher
    Minister of Fire 2.
    NULL
    

    Nov 2, 2011
    530
    364
    Loc:
    N. central Ia.
    Here in Iowa where corn is king I dont think you can find gas that dosnt have some ethonal in it, even premium at the pump unless you want to go dickin around airports buying gas. The main problem with ethonal is some folks try to keep it in storage at home in these cheap gas cans we are forced to buy anymore. All my stuff is old. Motercycles, tractors, 2 stroke stuff. I have never had a fuel related issue in anything unless the tank was empty. Everyone thinks ethonal eats up fuel lines in 2 stroke equipment. I say B.S. I'll bet I could put a chunk of fuel line in some of the highest, purest fuel you can buy and eventually it would rot the line. Could be a cheapening of mfg practices???
     
  4. bogydave

    bogydave
    Minister of Fire 2.
    NULL
    

    Dec 4, 2009
    8,426
    3,446
    Loc:
    So Cent ALASKA
    Book say at least 87 octane. That's our " regular " octane rating at the pump.
    no ethanol in the gas here.
    So I use regular gas. synthetic 2 cycle oil.
    I try to keep a fresh mix. mix a gallon at a time
    ( and I'm a oil bottle rinser, some gas in the bottle, shake it to get it all ;) )
     
  5. Backwoods Savage

    Backwoods Savage
    Minister of Fire 2.
    NULL
    

    Feb 14, 2007
    27,815
    7,368
    Loc:
    Michigan
    I was told that all gas stations in MI are now 10% ethanol, like it or not. I have not checked further on this so can not say for certain.
     
  6. Backwoods Savage

    Backwoods Savage
    Minister of Fire 2.
    NULL
    

    Feb 14, 2007
    27,815
    7,368
    Loc:
    Michigan
    My Stihl manual says a minimum octane rating of 89. I used to always just use regular but have switched to the higher octane. I can't tell much difference in how it runs. I also use Stabil with every tank of gas.
     
  7. Thistle

    Thistle
    Minister of Fire 2.
    NULL
    

    Dec 16, 2010
    4,206
    2,234
    Loc:
    Central IA
    Yup I do the same.Been using 10% ethanol in everything for around 10 yrs now,no problems of any kind with any equipment or my truck.If any of the saws arent gonna be used for 3-4 weeks,I dump the fuel back into gallon can.Takes just a few seconds to refill if I have some cutting to do for myself or someone else.
     
  8. Corey

    Corey
    Minister of Fire 2.
    NULL
    

    Nov 19, 2005
    2,304
    161
    Loc:
    Midwest
    Yes - sorry I didn't mean to muddy the water with my earlier post. I would definitely run at least the minimum octane rating specified by the mfr. Less octane could cause detonation, more octane doesn't really gain you anything unless you have hopped the engine up beyond the OEM configuration.
     
  9. Como

    Como
    Minister of Fire 2.
    NULL
    

    Jan 28, 2008
    885
    16
    Loc:
    Colorado
    91 Octane, no ethanol now that I have found a place in Denver that does it.

    Seems to make a bigger difference with the splitter.
     
  10. MasterMech

    MasterMech
    Guest 2.
    NULL
    

    Nate, I had my Canyon freeze up in 11 deg weather a few years back. I think I picked up a bad batch of fuel then, no other freezing issues to date and it has gotten much colder since.

    Heet is isopropanol (Rubbing alcohol without the added water). Much easier on the fuel system than Nate's methanol. ;)
     
  11. nate379

    nate379
    Guest 2.
    NULL
    

    Depends on the bottle. The yellow one is methanol, the red bottle is isopropanol.


     
  12. HDRock

    HDRock
    Minister of Fire 2.
    NULL
    

    Oct 25, 2012
    2,239
    859
    Loc:
    Grand Blanc, Mi

Share This Page