Re: Octane vs. carbon buildup?

[ti@amb.org (Ti Kan)]

Milan B. Milojevic writes:
> The later may be more accurate.  Audi knew of the carbon build up as early 
> as March 1996 when they issued a Technical Bulletin regarding the 
> problem.  I bought my A6 in July 1996.  Interesting thing is that there are 
> literally millions of cars on the road that do not suffer aforementioned 
> problem, and the A6 engine is not stressed at all within the parameters 
> they work with.  In my opinion Audi is counting on most of their customers 
> being ignorant and insensitive to unexplained noises.  Than the warranty is 
> over and it is your baby now.  In all fairness to Audi, I have heard that 
> they have picked up tabs on carbon removal with vehicles way out of 
> warranty period.

Your engine is the venerable 2.8 V6 12-valve used in not just your
model year A6 but all 96-97 A4 2.8, 1995-97 A6, 1992-94 100,
1993-95 90 and all US Cabriolet cars.  If there is a real design
issue with this engine we would hear much more about it on this list,
and most people on this list are certainly not ignorant about their cars.
It's more likely some external factor that causes some engines to
experience the problem but not others.  What is it?  I have no clue.

-Ti
96 A4 2.8 quattro (with the same engine, but no carbon buildup)
84 5000S 2.1 turbo
80 4000 2.0
-- 
    ///  Ti Kan                Vorsprung durch Technik
   ///   AMB Research Laboratories, Sunnyvale, CA. USA
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