[A4] Thinking about upgrading to a 2004-2005.5 A4 (B6?)

Richard Andrews richard.j.andrews at gmail.com
Fri Jun 6 06:03:23 PDT 2008

Tom, I have a 1.8t with over 200k on the engine.
the key to preventing sludge is regular oil changes with a good synthetic.
I stick with 3,000 miles intervals and use the LARGE filter sold at the

If you find a car that has been maintained you should be ok.


On 6/6/08, Tom Christiansen <tomchr at gmail.com> wrote:
> Hi,
> I'm thinking to replace my aging 1994 90S (B4) with something newer.
> Preferably a 2004-2005.5 A4 1.8T (I guess that would be the B6?) with a
> manual 6-speed transmission.
> I've heard of the dreaded sludge in the engine oil. Some people have
> claimed
> to be able to detect the sludge by looking at the inside of the oil fill
> cap. What exactly am I looking for to detect the signs of sludge?
> Has anybody tried products like Gunk Engine Flush or like products to get
> rid of the sludge? A lot of people seem to frown on the idea of using the
> engine flush products...
> What are other common problems with this car? Are there any recalls that I
> should be aware of?
> Thanks,
> Tom
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