I have a question in this same vein.  If I mix 50/50 of 100LL and a 93 octane 
autogas with 10% ethanol don't I end up with something like 95-ish octane with 
5% ethanol?  At what point can I ignore the ethanol.  6%, 4% maybe 3%?

Craig



> On September 11, 2018 at 10:25 AM "brian.kraut--- via KRnet" 
> <krnet@list.krnet.org> wrote:
> 
> 
> Earlier in this thread there was talk of mixing ethanol containing mogas
> with water to remove the ethanol.  That does remove the ethanol from the
> fuel (not sure if it removes 100%, but it does remove a lot of it), but
> there is still one problem.  From what I have researched, the ethanol
> they normally use is 113 octane.  If you remove the ethanol from 87
> octane mogas you are left with 85 octane.  Not sure if there are other
> considerations, but I would not be doing science experiments with the
> gas I am using in my airplane if I was not some kind of expert in fuels
> and knew exactly what I was doing.
> 
> Brian Kraut
> 904-536-1780
> br...@eamanuacturing.com
> 
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