Author Topic: Oil ratio on a 2000 288xp, a 90 262xp and a 550 xp  (Read 1357 times)

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Offline mdavlee .

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It just makes me feel better about running 87 in something with 200 lbs of compression plus.

Offline wild262

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This time of year I don't even use a saw much and only have mix on hand for my weedeaters & such.  In the spring when I cut firewood for the upcoming winter I allways dump the gas out when finished getting my wood.  Then I pour some "canned" gas in, run it awhile, then put it in storage till late fall/winter.  Never had a problem that way.  We can get non-ethy here so that's what I use with Stihl Ultra @ 40:1.  I believe the gas is 91 octane.  This works great for me.  I never had a problem with this mix even 6 months old.  But I don't push it past that, and I dump it in the ole dump truck.  Ethynol laced gas goes bad in 2 months or less for me.  Keeping the gas caps on tight on containers is a must with this crap.  I gladly pay alittle more for the e-free, but I know its not avail to all.

Offline Cut4fun .

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Stihl requires 89 stock. Solo requires 91 stock.  Dolmar Echo dealer has sign in shop use 89 min. Husqvarna recommends using at least 89 octane

Madsen's suggest 91.

Offline John Mc

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I'm a pilot, so have easy access to 100LL since that's what my aircraft burns. I also know a bit about lead, since most of my working life was spent in a factory that heat treated steel in molten lead. There is no way I'd run 100LL in my chainsaw. That tetraethyl lead is a particularly nasty form of lead. You don't want to be breathing with your head just a couple of feet from a chainsaw exhaust burning 100LL. When my wife (who is also a pilot) was pregnant (or even just trying to get pregnant), we never let here deal with fueling the plane. While lead can impact anyone, it is particularly problematic for children with developing brains

While the "LL" in 100LL does stand for "Low Lead", it still has significantly more lead in it than the old leaded auto gas. It's only "low lead" when compared compared to the old 100/130 octane aviation fuel (which is no longer available) that had something like 8 times the amount of lead in it as the old auto fuels.

We've got 91 octane E0 (ethanol-free) gas at a few stations in my area, so that's what I use in my chainsaws. If that were not available, I'd switch to premium E10 (10% ethanol) before I'd even consider using 100LL. I don't run a race saw, so the extra octane above 89 or 90 or so doesn't get me anything.

Offline Jason K

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I talked to Bob he runs all his saws on LL100. So I bought 5 gals of it and mixed it 40 to 1. I tell you my 1990 262 xp I can tell a big diff in it as well as my dolmar.  I was pulling my hair out snice last fall when the shell gas dealer sold out. They had unblended 93 I ran in every saw I own. Check every gas station around for 50 miles all 91 mutiblended not straight blend. Besides anyway LL 100 has a good shelf life vs std pump gas.I know that for a fact. Tell you one thing it smells


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