If one believes the claims of Marvel Mystery Oil (which I do), MMO's
detergent action cleans fuel injectors, and operates as an upper cylinder
lube and valve seat lube.

For those of you who are just learning which end of the tire pressure gauge
goes on the tire, lemme explain that "upper cylinder" part.

Inside each cylinder in your motor, a piston resides. It merrily flies up
and down in the cylinder, creating compression, and transferring the power
of the expanding gasses into motion. It's a menial job, but unemployment is
at an all time low, and the piston used to be on welfare, so give it a
break.

Around the circumference of the piston, there are, (generally speaking),
three rings, staggered a few millimeters apart. If someone says "I had my
RINGs replaced", or "I had a RING and valve job", these are the rings they
are talking 'bout.

If they say, "I had a myocardial infarction, then an angioplasty", that is
something else.

The two rings closest to the top of the piston provide a tight seal to
capture the compression. These rings fit very tightly in the cylinder bore.
The bottom ring works like a squeegee, scraping the excess oil off the
cylinder walls so the oil doesn't end up in the combustion process. It fits
tightly as well. When this ring wears, the motor produces a lot of
bluish-grey smoke from the burning oil.

Since the oil control ring has to be at the bottom, and it scrapes and
squeegees most of the oil off the cylinder walls, that leaves the upper
cylinder area poorly lubricated. Why should you care? Because this in the
primary area that "wears out" when a motor gets old, and looses
compression, the upper cylinder area.

MMO added to the fuel (allegedly) lubricates this area by arriving with the
fuel, and coating the cylinder walls, to some degree. It does the same for
the valve seats. Maybe I'll explain what valve seats are in our next
episode.

Cheers,

G. Matthew Bulley
Bulley-Hewlett & Associates
www.bulley-hewlett.com
Cary, NC USA
888.468.4880 tollfree

-----Original Message-----
From:   Todd Thompson [SMTP:ThZouave@AOL.COM]
Sent:   Monday, June 14, 1999 7:55 PM
To:     vanagon@GERRY.VANAGON.COM
Subject:        Re: TAPPING SOUND

I love mystery oil. never added it into the oil but do into the gas. I have
been doing it without any idea about why besides the PR from the company.
anyone have any idea what it does in the gas (lubricates the heads?).