[Vwdiesel] Candles? Was: Topic limited, or people

[Ron Schroeder]

Hi Val,

>From spectrographic analysis of used oils for the last 25+ years, I would
say almost all aspects including lubricity have improved.  By the way, many
of the additives now provide some lubrication on their own.

Ron Schroeder
WD8CDH
Brookhaven National Lab


> Message: 7
> Date: Mon, 3 Oct 2005 15:52:59 -0400 (EDT)
> From: Val Christian <val at mongobird.com>
> Subject: Re: [Vwdiesel] Candles? Was: Topic limited, or people
> To: vwdiesel at vwfans.com
> Message-ID: <200510031953.PAA19971 at swamps.roc.ny.us>
> Content-Type: text/plain; charset=us-ascii
>
> > Probably the worst multigrade oil now is better than the best single
weight
> > oil from 1970.
> >
> > Ron Schroeder
> > WD8CDH
>
> In what parameters?  Lubricity, no.  Additives, perhaps.
>
> Additives are packaged, and you can't pick and choose.  For engine
> break-in, you may wish only some additives.  (The safest route is to
> select none.)  For high torque applications, a different set.  For
> high sulfer fuel, a different set.  For high speed diesel, a different
> set.  So like many other operational and design situations, we are
> faced with trades.
>
> If you're going to compare oils, you must define the parameters
> which make the oil "best."
>
> One might try a Google search, using multiviscosity vs. straight weight
> oil, and take a look at the first two items.  One an EAA writeup, the
> second from a tribology rag.
>
> Val Christian
> N2EPO