Peter Dohm wrote:
2) I am not an aircraft and engine mechanic. However, I am confident
that running a Lycoming engine to circulate the oil is FAR BETTER than
letting it stand; both for the cylinders and the famous cam and tappets.

You'd be wrong. With a couple minutes running you've just barely got
the thing warmed up (depending on climate). There's a lot of cold metal
in there to begin with. You first start the engine. Fuel burns to
produce CO2 and H20. Lots of it. A lot of that H20 will liquify when it
hits that cold metal, and get swept away into that cold oil. There is
will stay, reacting with other combustion byproducts to form weak
organic acids. They don't eat metal fast, but they do it as long as
they're there.

If you're going to do ground runs, run the engine to circulate HOT oil
for a couple of minutes. You'll be fine then (I think 8*).


--
This is by far the hardest lesson about freedom. It goes against
instinct, and morality, to just sit back and watch people make
mistakes. We want to help them, which means control them and their
decisions, but in doing so we actually hurt them (and ourselves)."