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What oil is best? and what ratio?

Discussion in 'Chainsaws' started by DexterDay, Dec 28, 2015.

  1. OldJack

    OldJack Super OPE Member

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    Testing is easy enough. Take a clear and straight sided jam jar, fill it about a 1/3 full of water, carefully mark the water height, and add about another 1/3 of gasoline. Shake well and let sit for 1/2 hour. If the water - gasoline line is above your mark you've got gasohol. You can get more scientific with a graduated laboratory cylinder, but you really just need a pass - fail for chainsaw use. Esso Supreme is good here, regular is about 5%, but we're pretty far from corn country.
     
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  2. OldJack

    OldJack Super OPE Member

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    Interesting tidbit that I just picked up, and I don't know if it's true or not.

    "Thankfully actual science is against increasing the ethanol content of gasoline.
    The mutual solubility of gasoline and alcohol only allows alcohol content below
    10% or over 85%. Otherwise they just don’t mix well and create other weird
    problems."

    "The fact that it takes more diesel fuel to make alcohol than you get out of the
    alcohol would be lost on these idiots."
     
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  3. Benjo

    Benjo Some Guy

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    I could be totally off, but Wikipedia told me that aviation lean and MON are the same up to 100 octane, and that the lesser of aviation lean/aviation rich is used as the rating (not an average), meaning for Swift's UL94 aviation rating=MON rating. Also the label on the pump says "AVGAS RATING, motor octane method, 94" but I don't know if that refers to MON or not.

    Speaking of octane ratings, in the UK "regular" is labeled as 95, I didn't know until recently that they use RON so their labels are around 5 points higher than our AKI system...
     
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  4. Wood Chopper

    Wood Chopper Pinnacle OPE Member

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    Not all just at some stations and the high octane is the only one labeled.
     
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  5. RI Chevy

    RI Chevy DollyKitaStihlvarna Runner

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    Thanks Matt. So at Stewarts, there is e free fuel that is not super unleaded? Or just the super there?
     
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  6. Wood Chopper

    Wood Chopper Pinnacle OPE Member

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    Just the super is ethanol free. What I do not like is that there is not a separate pump. So all three grades come out of the same handle. Those that know more than I do you really think that it's possible to get a gallon or so from what ever was pumped previously? If so i'll just put 5 gallons in my car before I fill the can for the saws.

    I guess it would be interesting to know how the inside of the pump works and how close to the pump it selects the gas desired to be pumped.
     
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  7. RI Chevy

    RI Chevy DollyKitaStihlvarna Runner

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    Good idea Matt. Next time up I will use that can 1st. I still put fuel stabilizer in each tank anyway. Lol.
    Thanks.
     
  8. Wood Chopper

    Wood Chopper Pinnacle OPE Member

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    Yeah you can't use my system with your truck. Duramax wouldn't like it lol
     
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  9. RI Chevy

    RI Chevy DollyKitaStihlvarna Runner

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    Nope. But my lawn mower will use it right up quick. LOL
     
  10. Wood Chopper

    Wood Chopper Pinnacle OPE Member

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    So does any one know where the selection is made in a gas pump? Is it at the pump or closer To the tanks. If the switch was made closer to the pump then I wouldn’t think regular ethanol gas contamination would not be that bad ...if it happened more towards the actual in ground tank than yes a lot would get contaminated .I would think it would be closer to the actual pump?


    Sent from my iPhone using Tapatalk
     
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  11. Clemsonfor

    Clemsonfor Pinnacle OPE Member

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    I think it's the pump. Hoses/limes come there and the switching occurs there. Don't quote me but I think that's how it does.

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  12. Wolverine

    Wolverine Do you even burn wood bro?

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    If you want the best smell, buy some Klotz. It smells so good they make candles.
    [​IMG]
     
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  13. Wood Chopper

    Wood Chopper Pinnacle OPE Member

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    That’s what I would think. So let’s say you’re filling up a 5 gallon can maybe a quarter gallon might be whatever was pumped previously?


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  14. Clemsonfor

    Clemsonfor Pinnacle OPE Member

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    I would think not more than a half gallon. Cause you probably are going from about knee height to up there at either waist high or 8ft high of 3/4" hose, depending on where the hose comes out of the pump

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  15. Loanstar

    Loanstar When I grow up I want to be a "they"

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    I always put a gallon or two in the truck before my mix cans. Might just be ocd but i feel better.
     
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  16. Redbull661

    Redbull661 661 hoarder (BlueBallz)

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  17. RI Chevy

    RI Chevy DollyKitaStihlvarna Runner

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    Wow. Nice inside for a saw with that many hours.
     
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  18. bwalker

    bwalker Pinnacle OPE Member

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    That's not really accurate. No supprise given wikipedia. The Lean rating CAN correlate with the motor octane number, but in many cases it doesnt. Given the fact we are talking about an unleaded aviation fuel the chances of the lean number correlating with MON is probably less than average.
    However, as it pertains to chain saws octane in and of its self is of minimal consequence.
     
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  19. bwalker

    bwalker Pinnacle OPE Member

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    You can make any oil look good running it rich.
     
  20. Benjo

    Benjo Some Guy

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    Indeed, for the OPE I use it in it could be 87, I only care about the excellent stability and the reduced health effects of alkylate fuel (exhaust is virtually free of benzene, alkylbenzenes, and alkenes, which I'm told are bad by my cancer researcher friends.)
     
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