Recently a member of the Aviation Fuel Club, Gilbert Pierce of
Germantown, Tenn., sent us the description of how he tests for ethanol
using a few drops of ordinary food coloring:
“While driving 20 miles into Mississippi to get ethanol-free gasoline
for my airplane I was contemplating what must be in the blue dye that is
in the Quick Check Solution kit. It occurred to me that what ever it was
had to be water soluble so it would mix with the ethanol. I always check
the suppliers of ethanol-free fuel before pumping any gas as I have been
lied to about it. Anyway, the test kit that you add water to is a hassle
and takes a few minutes to settle out. The blue Fuel-Check works great
but is expensive. When I got home I got my wife’s red, blue and green
food coloring out; it’s water soluble. A quick check with pint jars of
ethanol-free fuel and adulterated fuel indicated that a drop of any
color food coloring will dissolve and turn the adulterated fuel the same
color as the food coloring. Putting a drop of food coloring in pure
gasoline, the drop just goes to the bottom of the sample and rolls
around there as little globules. Now I just carry a bottle of
inexpensive and readily obtainable food coloring and a quart glass jar –
it’s easier to get a fuel sample into – and have an instant indication
of ethanol free fuel or adulterated fuel.”
Remember, always test every batch of gasoline purchased at any location
other than an airport

    FYI, Virg

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