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From: "Ed Anderson" <eanderson@carolina.rr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-540760@logan.com>
Subject: Re: [FlyRotary] Re: MMO vs 2-cycle    (was  Re: how do you carry, and measure oil?)
Date: Sun, 21 Nov 2004 10:46:34 -0500
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Marvel Mystery Oil (MMO)

Ed Anderson
----- Original Message -----
From: "Bob White" <bob@bob-white.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Sunday, November 21, 2004 10:34 AM
Subject: [FlyRotary] Re: MMO vs 2-cycle (was Re: how do you carry, and
measure oil?)


> OK, I give up.  I thought after a few comments I could figure it out,
> but what is MMO exactly?
>
> Bob White
>
> On Sun, 21 Nov 2004 08:39:27 -0600
> "Russell Duffy" <13brv3@bellsouth.net> wrote:
>
> >     I have used the MMO/2 cycle mix in the past but for the last 100
> >     hours I
> > have been using the Wal-Mart Marine 2 cycle oil.  After reading up on
> > the different classifications of 2 cycle oil (most brands are all in
> > one now) and looking at the temperature profiles for the apex seals I
> > concluded that almost anything would do a better job than crankcase
> > oil of lubricating the seals.  And 2 cycle certainly leaves less
> > residue than crankcase oil.
> >
> > Mornin' Ed,
> >
> > Is MMO and 2-cycle oil close to the same thing?  When I try to
> > rationalize using one over the other, I come up with one other issue.
> > Our pre-mix oil does get scavenged into the crankcase to some extent.
> > MMO is made to be used in fuel, and oil, so that's not a problem.  I
> > can't say that I've ever heard anyone comment on the effect that
> > 2-cycle oil has in our crankcase. I've wondered if this alone is a
> > reason to prefer MMO over 2-cycle oil.
> >
> > Another question just came to me.  Does oil injection cause oil to be
> > scavenged into the crankcase?  I'm assuming it would be less than what
> > we get with pre-mix, though some must make the trek.  I wonder if
> > Mazda considered that when deciding to use crankcase oil for the apex
> > seals?  Of course originally, they weren't using the dripper
> > injectors, but rather injecting the oil into the fuel/air stream at
> > the carb.
> >
> > Cheers,
> > Rusty
> >
> >
> >
> >
>
>
> --
> http://www.bob-white.com
> N93BD - Rotary Powered BD-4 (soon)
>
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