<VV> hot motor oil

[Mark Durham]

Ken, it is an interesting topic.  With any oil, it depends on the strength
of the strands of oil molecules that matters.  Less strong oil have weak
strands and break down even before you get even 3000 miles on it. This
shows up as the oil thickens.  Better oils are more highly refined and hold
together longer.  Synthetics do the best job. We need to use what the
engineers designed the engines to use.  That is a good oil that meets the
specs the engine is designed for with sufficient antiwear agents (ZDDP).
Read Richard Widmans articles. Mark Durham

Sent from my Windows Phone
------------------------------
From: Ken Clark
Sent: 1/6/2012 19:48
To: 62vair at gmail.com; Matt Nall; virtualvairs at corvair.org
Subject: RE: <VV> hot motor oil

  Thanks for the info.  this does interest me and I hope to do some kind of
test to compare them.  (dino vs synthetic)  Not sure how yet or if it will
prove anything, but it does intrigue me.   Ken


 > From: 62vair at gmail.com
> Date: Thu, 5 Jan 2012 20:48:09 -0800
> Subject: RE: <VV> hot motor oil
> To: kcvair at hotmail.com; patiomatt at aol.com; virtualvairs at corvair.org
>
> Ken, take a look at the msds sheets for the oils in question. The
> corvair engine was designed for oil at a viscosity of 9.3 to 12.5 cSt
> at 100 degrees C , or 212 degrees F Per Richard widmans article. It is
> a standard test. So, look for oils in that range, but stick to the
> higher cSt end. Oils loose their ability to hold viscosity over time.
> True synthetics are less prone to this so can do a better job for
> longer change intervals.
> People have used full synthetic up to 18 cSt at 100 degrees c, however,
> which is the Mobil 1 15w50 oil. Maybe because it is more slippery? Mark
> Durham
>
> Sent from my Windows Phone
> From: Ken Clark
> Sent: 1/5/2012 19:20
> To: Matt Nall; virtualvairs at corvair.org
> Subject: Re: <VV> hot motor oil
>
> The Mobil 1 I used was 10w40 as all my Covair oils are and one of the
> questions was what kind of viscosity will we see when we compare a
> Mobil 1 oil vs a dino oil when the Corvair engine is at running temp.
> Has anyone ever checked to see which might be thinner when drained
> from a hot engine. By the way that engine was taken out and replace
> by the correct designated engine.
> Ken C
>
>
>
> > To: virtualvairs at corvair.org
> > From: patiomatt at aol.com
> > Date: Wed, 4 Jan 2012 20:07:09 -0500
> > Subject: Re: <VV> hot motor oil
> >
> >
> >
> >
> > Since the motor oil topic came up again I have a question concerning
oil when it
> > gets hot(engine running temp Corvair). A few years back I made a 1000
mi. round
> > trip to Helen Ga show. The engine did not use excessive oil, maybe a
qt. in 400
> > mi. I was told Mobil 1 was the way to go, so changed to MObil 1 before
the
> > trip. Used about 8 qts round trip. A Mobil(expert) tells me that the
oil is
> > thin as water and runs right through the engine. My thought is that any
oil is
> > thin at engine temp. Changed back to 10W40 Quaker ST. and did not have
usage
> > problem. Any thoughts on this situation?
> > By the way, everyone(almost) used STP back in the 60's and did you ever
take an
> > engine apart that had been using it? I've taken pans off that were
covered with
> > 1/2 inch of sludge. I 'm told that was from STP and other additives.
Not sure,
> > but know what I've seen.
> > Ken C
> >
> > ============================================================
> >
> >
> > Ken 400 miles per qt is excessive! Your piston rings are worn..even if
no smoke is visible.
> >
> >
> > Normal is well over 1,000 miles.
> >
> >
> > Then.. saying "Mobil 1" means nothing... it's the weight /s of the oil
> >
> >
> > had you used 10w40 M1... it would /should be the same...
> >
> >
> > Regardless of what is "Best" for our engines...
> >
> >
> > When rings are worn.. thicker is better..
> >
> >
> > I remember Joe C. consuming 15 qts' from Mich. to Fla... 5w30
> >
> >
> > Told him to start adding 20w50.... only 5 qts. on the way back.. no
more smoke...
> >
> >
> >
> > Matt Nall
> > Charleston, Oregon
> > http://tinyurl.com/The-Patio
> > http://tinyurl.com/Matts-Tech-Pages
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
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