MMO, like many other additives is great stuff when used as intended.

But like any other successful product, our marketing spin doctors grab onto
the stuff and soon it's great for anything under the hood, your constitution
and your 2 year olds diaper rash!

BTW, when we came across a seriously sludged engine we would drain the oil,
pour in 4 quarts of transmission fluid and run AT IDLE for a few minutes.

Then we would drain the transmission fluid from the crank case, remove,
drain & reinstall the old oil filter, pour in some used oil and run for a
few minutes again. The transmission fluid would always come out black.

Finally, we would do a complete oil & filter change with new oil.

I told a friend about this procedure after looking under his valve covers &
seeing serious sludge. He drained the oil, poured in 4 quarts of
transmission fluid and drove the car!!!!

The exercise did not seem to hurt anything but some don't follow directions
well.

Tom
www.stir-plate.com

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM] On Behalf Of
David Beierl
Sent: Saturday, June 19, 2010 2:28 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Techron

At 06:26 PM 6/18/2010, Karl Ploessl wrote:
>another contender is/was Marvel Mystery oil (some might still remember

The Atomic Four marine engine (L-head) has an unpleasant tendency to develop
sticky valves.  There's a strong consensus in the A-4 community that a pint
of MMO per twenty gallons of fuel will eliminate this tendency, and my
experience is that this is so; although it's equally important to cover the
exhaust and intake openings when laying up over the winter.

No applicability to Vanagons is implied.  But it's great stuff for getting
into seized electric-motor bearings and getting them running again (Vanagon
heater blower...), and similar penetrant+lubrication situations.  I just
filled my four-ounce can from my gallon can...

Yours,
David