As Frank C. sez: Drive it like you stole it. You'll be able to tell when to
switch to synthetic oil when the oil consumption stabilizes. That means the
rings are seated.
Geoff Branch '74 Meejit
----- Original Message -----
From ryan marro <ryan_marro at hotmail.com>
To: <macy@bblmail.psycha.upenn.edu>
Cc: <spridgets@autox.team.net>
Sent: Monday, January 15, 2001 5:46 PM
Subject: Re: [Summary] Run-In Oil??
> What's the proper way to treat the engine during break in? 35 everywhere
> you go? Varying rpms? Steady rpms?
>
>
> >From: "Larry B. Macy" <macy@bblmail.psycha.upenn.edu>
> >Reply-To: "Larry B. Macy" <macy@bblmail.psycha.upenn.edu>
> >To: "Larry B. Macy" <macy@bblmail.psycha.upenn.edu>
> >Subject: [Summary] Run-In Oil??
> >Date: Mon, 15 Jan 2001 11:09:00 -0500
> >
> >Well, the on, and off, list opinion seems to be that using an organic oil
> >is
> >best for the run-in period, There seems to some discrepancy as to what the
> >run-in period should be and how it should be done. The consensus is that,
> >and it makes sense, the rings won't seat properly if a syn oil is used
> >during the first, 500 - 8000 miles (quite a range, huh?) the rings won't
> >seat properly. Has to do with the "slickness" of the oil. Syn is too slick.
> >
> >So I will use an organic oil for the first grand or so. Then go to the syn,
> >just cause I like it. The OP stays higher when warm with Mobil 1 than with
> >either Castrol or Valvoline 20-50. Well that is my experience. Or That's my
> >story and I'm sticking to it. I always like the Valvoline 20-50 over the
> >Castrol because it seems to hold the OP better. Maybe right, maybe not,
> >maybe buggers, maybe snot.
> >
> >I changed to the syn in the first place because, as I understand it, it
> >handles higher temps better. That is that it does not loose it's
> >lubrication
> >abilities at a higher temp as opposed to an organic oil. When I first
> >switched over to an electric fan, instead of the water pump driven one, I
> >was experiencing a higher than, what I perceived to be normal, temp. Found
> >out later that my temp sender was bad. But anyway, I find that the syn oil
> >seems to hold the hi-temp pressure better than an organic based oil. So I
> >will be going that way in the end.
> >
> >To start, run-in with organic, then switch to syn.
> >
> >Thanks for all the advice, folks
> >
> >BTW I sent the same question to Mobil. I will forward their response when I
> >get it.
> >
> >Larry
> >
> > >Well Hello, Boys and Girls!!
> > >
> > >And How is Everybody Today??
> > >
> > >I am getting ready to reassemble the 1500 I have that is going to replace
> > >the engine I have in the car now. I have a bit of a question that is sure
> >to
> > >stir up a few comments.
> > >
> > >I have been running Mobil 1 15-50 in my engine for a few years. I like it
> >a
> > >lot. Now on the new engine I want to continue to run Mobil 1. However I
> >am
> > >unsure of using it for running in the engine. I don't really see an issue
> > >with it, but I have not heard anything about it. I have heard that using
> > >organic oil is preferred, but I just don't know why.
> > >
> > >Any thoughts on why I should or should not use Mobil 1 synthetic oil to
> >run
> > >in a new engine??
> >
> >Larry Macy
> >78 Midget
> >
> >Keep your top down and your chin up.
> >
> >Larry B. Macy, Ph.D.
> >macy@bblmail.psycha.upenn.edu
> >System Manager/Administrator
> >Neuropsychiatry Section
> >Department of Psychiatry
> >University of Pennsylvania
> >3400 Spruce St. - 10 Gates
> >Philadelphia, PA 19104
> >
> > Ask a question and you're a fool for three minutes; do not ask a question
> >and you're a fool for the rest of your life.
>
> _________________________________________________________________
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