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"Larry W4CSC" wrote in message
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wrote in
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My merc 60 was shipped "wet" and ready to run. (laying face down in
the crate). Nothing leaked out. These things are pretty much sealed

I don't think "leaking" is the problem. Inside the engine, if you tip it
up so the oil sits atop the piston, the only thing that keeps the oil from
draining INTO the combustion chamber is the rings, which do not seal
completely in any engine. They're not made to prevent oil flow past them
for weeks, just milliseconds.

What do you suppose would happen if oil leaked from under the piston to
fill or partially fill the combustion chamber when the engine was started?
(Flashback to watching deck crews manually pulling props slowly on WW2
carriers when airplanes had radial engines with pistons pointing down to
purge them of oil before cranking the engines.)

Unfortunately, these cheap engines don't have DRY SUMPS like an old
Harley....Storing oil in the crankcase was ok until someone turned it
OVER!

Hey, thanks! I love to learn stuff about engines.