REFLECTOR:Fuel Sediment

[Scott Baker]

Hi John,
This is out of my league.  Have you examined the particles under a magnified
glass to see if it is fibrous in nature or is it something globular?  Ask
your airport friends if they have noticed contamination in their aircraft
fuel (could be the supplier or a problem with the FBO's fuel filters).  I
agree with you that all of the "dust" should have settled by now.
SB


----- Original Message ----- 
From: "John Dibble" <aminetech@bluefrog.com>
To: <reflector@tvbf.org>
Sent: Thursday, January 29, 2004 5:43 PM
Subject: REFLECTOR:Fuel Sediment


> Often when I sample the fuel sump I see a few tiny particles in the
> gas.  Perhaps this is fiberglass dust which wouldn't be a surprise.
> However with 280 hours it seems that any dust from the building process
> should have been flushed out by now.  Does anyone else notice this?  I
> note in the Owner's Flight Manual it states that "....auto gas
> (especially the high aromatic content no-lead) should NEVER be used.
> They can dissolve the epoxy in the fuel tanks."  In the 70's when they
> began phasing out lead, aromatics were the main octance booster in auto
> gas.  Today MTBE is used.  However the 100 LL in the south now contains
> aromatics to boost octane.  Is this a problem?  Maybe Scott B can comment.
>
> John
>
>
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