As I understand it, water will sometimes stay suspended in gasoline.
Normally, though, the water separates out to the bottom of the container
showing a distinct surface between it and the gasoline.

Obviously, since they sell it that way, alcohol will stay suspended in
gasoline.

But, when water and alcohol mix in the gasoline, the alcohol will come
out of the gas/alcohol suspension and mix with the water. As far as I
know, the alcohol is distributed evenly throughout the water/alcohol
mix. Water/alcohol is, I think, a solution, not a suspension. (A
solution likes it that way, a suspension just needs an excuse to
separate.)

If you mix one inch of water with 10 more inches of gasohol in a tube,
shake it, it will _look_ like you now have two inches of clear liquid.
(10% of the gasohol is alcohol = 1" in the tube.)

If your engine gets a slug of water, it will pump it through as long as
the prop keeps turning -- but no power is being produced. You might get
carb icing for all I know. If the engine is windmilling, the cylinders
pump air and, presumably, suck liquid out of the carburetor jets. The
common question is: do you contact the ground before the water is pumped
out and the engine develops power again?

If you have gas line antifreeze in your tank, the gas and water mix,
separate and pass through the engine, hopefully continuing to produce
power in the process. This works fine in cars.

To the best of my knowledge, gas line antifreeze is NOT authorized in
aircraft. It certainly attacks sloshing compound inside the tanks and
makes a suspension of slush flakes and dirty gas. Perhaps someone knows
if it also attacks other fuel system components.

After my forced landing from gas line icing, I used HEET some when I was
suspicious of water accumulation or contamination. I eventually stopped
because of the sloshing compound issue. I've wondered if I could arrange
a pump to push a bottle of HEET into the nose tank if the engine stops
the next time I fly below zero.  Probably won't mess with the HEET
injection idea but that stuff sure cleans out gas line ice FAST!



[EMAIL PROTECTED] wrote:
>
> I'm confused (something everyone on the "other" list is well aware of).
I
> thought the alcohol absorbed the water, allowing it to pass through the
> system
> and be burned.  You're saying it separates out like the water.  How then
> does it
> pass through the system?

--
Ed Burkhead
Peoria, Ill.
Ercoupe N3802H, 415-D


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