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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