I actually run my street cars with diesel oil.
jon
On Wed, May 25, 2011 at 3:56 AM, Austin Healey <pajtamuvek at gmail.com> wrote:
> I usualy use diesel oil for the fist startups, as they are told to be
> better
> for runnig-in. Is it only a industrial legend, or fact?
> Never had running-in oil related problems soo far.
>
> Gergo
>
> 2011/5/24 <Editorgary at aol.com>
>
> > In a message dated 5/24/11 12:04:40 AM, coudesluijs at chello.nl writes:
> >
> >
> > > I have never used "running in" oil but always primed the rebuild
> engines
> > > turning over by hand first and then on the starter without plugs until
> > > oil pressure was shown.
> > >
> > What is called "running-in oil" is simply a good high-grade, heavy-weight
> > oil with a guaranteed high amount of ZDDP additive. Torco oil is one good
> > example. In Europe, you may never have had the problem we had here for
> > several
> > years, when the oil companies were removing ZDDP from all of their
> regular
> > oils and one of the consequences was that engine rebuilders were
> > encountering
> > problems with new cams being destroyed during the critical first 15
> minutes
> > of operation of the new engine, when there was no Zinc to bond with the
> > Molybdenum to fill in the microcavities on the surface of the cam lobes.
> > With
> > more over-the-counter oils in the 15/40 and 20/50 range now with ZDDP
> > additive again, it seems to be less of a problem, but the rebuilders I
> know
> > still
> > use the high-quality oil during that critical first hour or so of engine
> > operation.
> > Gary
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--
Jonathan J. Einhorn, Esq.
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