Paul,
 I thought this would be of interest to the Rotary Engine people.
 Herb

 I learned some interesting information from a Colonial Pipeline quality
 control supervisor this weekend.  He works at a distribution terminal near
 Greenville, S.C.  I was bemoaning the fact that I had trouble finding 93
 octane gasoline that doesn't contain ethanol.  He told me that all of the
 93
 octane gasoline in our area is ethanol free.  So I tested the 93 octane at
 a
 local gas station this morning and sure enough, it contained no ethanol
 even
 though the pump was placarded with a sticker with "may contain up to 10%
 ethanol".

 He explained that Colonial's pipelines are made of black iron and
therefore
 were not suitable for transporting gasoline with ethanol.  Colonial
 receives
 ethanol in stainless steel rail cars; and the ethanol is mixed with the 87
 octane fuel at the terminal--not so with the 93 octane.

 Dan

 what we need is a quick way to check for alcohol.

 Paul Lamarin Reno



 Paul,

 You can buy fuel test kits.  Briggs & Stratton sells the one I purchased.
 You should be able to get it from your local mower repair shop.

 Mark S.

 That could be a break through for the composite guys.
 Have you tested local 93 octane auto fuel for alcohol?
 How long does it take?

 Paul Lamar



 No, but I will this coming weekend.
Mark S.



Here in Finland microlight flyers measure that alcohol % at pump gas often
like this:  Take 120 cm long clear hose. Put plug bottom of that hose and
mark 10 cm and then 100 cm line (at this first line mark) . Fill 10 cm pure
water, then fill 100 cm pump gas and put plug upper part of hose. Mix that
gas/ water several times and measure how much you got that water/alcohol mix
at bottom of hose. 1 cm is 1 % .   If you got 15 cm water and alcohol, that
mean you have 5 % alcohol in your pump gas.

Makes me wonder how much you need water in your tank, that start alcohol
separation process in flight....

Here is conversion for cm/inch:
http://www.sciencemadesimple.com/conversions.html

Cheers
Vesa K