I would say that regardless of oil level, the sump rejects Z calories
of
heat per minute (due to the excellent heat conduction properties of
aluminum), so it really doesn't matter whether there are 4 or 8 quarts
in
the sump. If you don't change the radiating area of the sump or the
amount
of calories you need to reject via the sump the dwell time of the oil
in the
sump really shouldn't matter in a meaningful way.

KB


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Hmmmm. I think you just answered your own question. Aluminum is a great
conductor of heat, we all agree on that. If you have more oil in the
sump the you have a greater area of liquid in contact with the aluminum
sump because of a higher oil level. A larger wetted area results in
greater heat dissapation...No ?????