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