Testing the Testing of Mogas

"Al" wrote in message
...

"Jay Honeck" wrote in message
ps.com...
others have already commented on the alka seltzer chemisty, but a
simpler
and quantitative way of measuring how much alcohol is in the fuel is to
simply mix it with water. Try 9 parts of fuel to 1 part of water in a
graduated cylinder. the alcohol will migrate to the water phase so you
will
see an increase in the height of the water layer at the bottom and a
decrease in the height of the fuel layer if there is significant amount
of
alcohol..

Does this mean that you can use water to REMOVE alcohol from mogas?

I guess it does but I wouldnt reccommend this to anyone. Interestingly we
had a major fuel contamination issue in australia in 2000 which grounded
half the GA fleet , a corrosion inhibitor , diethylamine which was supposed
to be washed out of the fuel before sale, wasnt removed properly . it
reacted with brass in the fuel systems to form a black gunk which caused
some engine failures. fortunately no one was hurt ( other than financially).
the solution was to just wash the stuff out with water.
terry