Odd spark plug colour

[Steve Sears]

MTBE?
If it's running fine, not too hot, doesn't burn oil, mileage is not changed,
etc. then it's probably additives in the gas.  Clean 'em off and reinstall.
Cheers!
Steve Sears
1987 Audi 5kTQ
1980 Audi 5k
1962 and '64 Auto Union DKW Junior deLuxes
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----- Original Message ----- 
From: "Robert Mangas" <porter_t_dog at hotmail.com>
Subject: RE: Odd spark plug colour
To: iain.atkinson at tesco.net, quattro at audifans.com
Message-ID: <Sea2-F655EuvMVnDv3E00017ea3 at hotmail.com>
Content-Type: text/plain; format=flowed


  Fuel additives will often impart an odd color to plugs; I pulled a set
once that were green, which kind of freaked me out.

>From: <iain.atkinson at tesco.net>
>To: quattro at audifans.com
>Subject: Odd spark plug colour
>Date: Tue, 27 Jan 2004 15:00:20 +0000
>
>Pulled the plugs on the 90 20v today (7a eng code) just to have a look at
>the condition been in now for 20k miles. The colour was an orange colour
>almost like rust, never seen this before just wondered if anyone out there
>has any kind of explanation. I do use an ocatane booster in the fuel but
>can't believe it's that. Car runs fine.
>
>
>Iain