[Vwdiesel] Vwdiesel Digest, Vol 42, Issue 27 (fwd)
Val Christian
val at mongo.mongobird.com
Fri Apr 27 11:31:31 EDT 2007
That could be. The way I've heard it described is that the lighter
vis keeps a more turbulent flow in the boundry between the rings
and lands. Loren, you're suggesting that it could be a more chemical
than physical effect. I don't know but I could be convinced either
way. Hence the interest in peer reviewed articles.
Val
>
> In a message dated 4/27/2007 3:49:17 AM Pacific Daylight Time,
> val at mongo.mongobird.com writes:
>
> > Higher vis oil, combined with leaky rings, can aggrivate carbon
> > buildup in the ring area. This have the effect of increasing the
> > leakage, by making the ring "sticky" in the groove. A lighter oil
> > may reduce the effect. This is counter general wisdom, which has
> > always been, higher viscosity oils in older engines.
> >
> >
> What I've noticed didn't have so much to do with the viscosity
> of the oil but its tendancy to carbon up or "amber." Oils that
> leave more residue in the engine will carbon up the rings more
> in an oil burning engine, and make it burn even more. An oil that
> disperses carbon better can actually clean out that carbon
> making for LESS oil consumption. :-)
> Loren
>
>
>
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