Running ringed engines that rich is harmful, non-productive, and a waste of
fuel. Whomever it was that started the rumor/procedure that ringed engines
need a super rich breakin, didn't know what he was talking about.

Running the engines that rich will keep them from breaking in, meaning seating
the ring. Keep in mind that we are running 4-5 times more oil than a regular
engine. If you run a ringed engine too rich, too long....you will glaze the cylinder
wall and the ring will not seat, or it will take forever to seat. You will have an
engine that will not produce full power, or idle well because of excessive blow-by,
and low compression.

FBD.