[DeTomaso] Oil Numbers

[Kirby Schrader]

Some info:

http://mahleclevite.com/techbulletins/CL77-1-205R.pdf

On Wed, Jul 1, 2009 at 4:11 PM, <asajay at asajay.com> wrote:

> Okay, so how do I know what grade of oil to run, if I'm my own builder
> and I don't know the relation between clearances and oil viscosity?
>
> Asa Jay
>
> Quoting Tomas Gunnarsson <guson at home.se>:
>
> > I'd say no change at all. The viscosity is measured the same way
> > with mineral and synthetic oils AFAIK. If your engine builder says
> > use a 20W50 I see no reason why you shouldn't be able to use a
> > mineral 20W50 or a synthetic XXW50 oil. Or the other way around, you
> >  build an engine the same way for a mineral or synthetic oil of a
> > given (hot) viscosity.
> >
> > My 2c...
> > Tomas
> >
> > ----- Original Message -----
> > From: <asajay at asajay.com>
> > To: <detomaso at realbig.com>
> > Sent: Wednesday, July 01, 2009 10:37 PM
> > Subject: Re: [DeTomaso] Oil Numbers
> >
> >
> >> Which brings up an interesting question.  For those of us hicks who
> >> tend to build our -own- engines.... how do I know what oil is best to
> >> use with what clearances?  If rebuild an engine to factory specs
> >> (clearances), then I would assume the factory recommended oil.
> >>
> >> But, what if I want to run a synthetic?  How does that change the
> >> clearances influencing oil grades?
> >>
> >> I'm dumb on these things... that's why I ask all the questions.  :)
> >>
> >> Asa Jay
> >>
> >> Quoting JDeRyke at aol.com:
> >>
> >>> In a message dated 7/1/09 9:46:32 AM, teampantera at yahoo.com writes:
> >>>
> >>>> I think the time to discuss engine clearances and what oil to use with
> >>>> your engine builder is BEFORE you put oil in a new
> >>>> engine....especially if he
> >>>> is providing an engine warranty....
> >>>>
> >>> Absolutely correct. For example, an engine clearanced for 5W20
> synthetic is
> >>> not going to last long with 20W50 dino oil, and the other way around
> won't
> >>> work either. Go with the builder's recommendation. No one else
> >>> knows exactly
> >>> what's in your engine- and if he doesn't have a specific
> recommendation,
> >>> find another engine builder.   My 2¢- J Deryke
> >>>
> >>>
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