snake oil?

[iain.atkinson at tesco.net]

I think it's normal, i lifted the rocker cover off my A6 2.8 1999 the other day and found the same thing, it's almost like a staining, other than that it was as clean as whistle at 115k. I wouldn't bother doing anything just keep changing the oil.


Iain
---- Kent McLean <kentmclean at comcast.net> wrote: 
> Let's say I haven engine with a lot of miles on it. Let's say
> I can see brown stain, for lack of a better term, on the internal
> bits when I take off the oil cap.  Let's say I'd like to clean
> the insides of the engine.
> 
> What would you use? Some of the "cures" I've heard include:
> 
> Rislone Engine Treatment
> Marvel Mystery Oil (MM)
> Automatic Transmission Fluid (ATF)
> synthetic oil as usual
> 
> Others?
> 
> Or are they a waste of time, money, and effort,or do more
> harm than good?
> 
> Thanks.
> 
> -- 
> Kent McLean
> '99 A4 Avant, V6 Tiptronic
> '91 200 TQA #3, with mods
> gone: '91 200 TQA x2, '94 100 S Avant, '89 200 TQ
> 
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