Chainsaw Repair

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.