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How blue is 100LL?



 
 
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  #2  
Old April 27th 04, 07:48 PM
gatt
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"James M. Knox" wrote in message

So how blue is it supposed to be? Is there another simple test I could
have done to reassure myself (besides burning 30gal of it and having it
work fine)?


I've seen it all over the place. From almost navy blue (at an airport

that
doesn't get much traffic, to no discernable color at all).


Ran into this at the FBO that I fly out of at PDX-TTD. Sometimes the dye is
so pale that you have to hold it right up against a white surface such as
the vertical stabilizer to confirm the blue dye.

-c


  #3  
Old April 26th 04, 05:29 PM
Bob Gardner
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Dribble a little fuel onto a piece of white paper...if it evaporates and
leaves behind a tint, it is avgas; if it spreads out, soaking into the
paper, it is jet fuel.

Bob Gardner

"Ben Jackson" wrote in message
news:%91jc.37417$_L6.2182786@attbi_s53...
I usually pump my own, but today I called ahead and had the FBO fill it
for me (only 53 cents more/gal!). I wasn't even present for the fueling
so I was extra paranoid during preflight, and I swear the 100LL was not
as "blue" as it usually is. It smelled like gas, and when I finally got
a big enough sample you could see a slight blue tint, but on a dip tube
I would have sworn it was clear.

So how blue is it supposed to be? Is there another simple test I could
have done to reassure myself (besides burning 30gal of it and having it
work fine)?

--
Ben Jackson

http://www.ben.com/



  #4  
Old April 27th 04, 10:00 PM
Teacherjh
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Dribble a little fuel onto a piece of white paper...if it evaporates and
leaves behind a tint, it is avgas; if it spreads out, soaking into the
paper, it is jet fuel.


If it leaves a ring, it's jet fuel. I've been told even a little (like 5%) is
sufficient to leave a visible ring.

But yes, I've seen very pale 100LL. In fact, I've rarely seen really blue
stuff. When I got my license (1980) it was supposed to be as blue as Windex.
(in fact, that's what was used in a slide my ground instructor had to show the
fuel colors - El Monte didn't have 100LL at the time)

To top it off, my fuel tester has little plastic inserts - they are blue. I
wish they'd get smart and make them white or clear.

Jose

--
(for Email, make the obvious changes in my address)
  #5  
Old April 27th 04, 01:11 AM
C J Campbell
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Throw some of the fuel on the pavement. If it evaporates quickly, it is
avgas. If it just sits there, it is jet fuel. Avgas also acts differently if
you throw it onto a puddle of water than jet fuel does.

Anything that is put into a fuel tank is going to come out dyed blue and
smelling like gas.


  #8  
Old April 29th 04, 02:17 PM
Bob Moore
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"Eclipsme" wrote

Next time try pouring a few ounces of the fuel onto the ramp. Fuel
will soak in, but water will bead up.


And in Florida, gets you a $50,000 fine.

Bob Moore
  #9  
Old May 1st 04, 02:47 AM
Eclipsme
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"Bob Moore" wrote in message
. 8...
"Eclipsme" wrote

Next time try pouring a few ounces of the fuel onto the ramp. Fuel
will soak in, but water will bead up.


And in Florida, gets you a $50,000 fine.

Bob Moore


Hmm. Not aware of this. What do you do with the drained fuel then?

Harvey


  #10  
Old May 1st 04, 11:10 AM
Cub Driver
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Hmm. Not aware of this. What do you do with the drained fuel then?


Generally you use a capture bottle, and you return the sample to a
designated collector.

Hasn't reached this far, though I seem to recall such a deal in New
Jersey. (Where the fuel tank was above the surface, also I think
because of environmental worries.)

Besides, we don't have any asphalt

all the best -- Dan Ford
email: (put Cubdriver in subject line)

The Warbird's Forum
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