The problem with too much oil is that it gets beaten into a froth- so it
technically becomes a phneudraulic substance.  That means the air in the oil
makes the oil less efficient than oil alone at cooling.  That is why engine
manufactures insist on a maximum oil level.
JMHO
ed- who can't spell pheudralicks, phew-dralic ?

> Try this: REDUCE the oil level to the add mark. Then see watch happens.

> RJS Uh . . . no. Not without you giving me a hint as to why I should do
this, and what I should expect to see.