Guess what I'm saying is that no matter if the oil is drained hot or cold, the oil film that stays on all the drained off parts still gets cold and any varnish precursors will still drop out when it cools. There is nothing that can be done to remove the oil film off of all the parts inside the engine except tear it apart and clean all oil off with solvent. If a hot sump cools before draining the oil, are you saying the oil pan coud become more varnished compared to if it was drained hot?it's like humidity in air, it's relative to temperature. The humidity condenses out of air when it gets cold, the precursors to varnish drop out of oil when cold. The humidity clings to cold objects, the varnish precursors to metals.
It doesn't matter if relative humidity is low, you won't get to the dew point anyway, and it doesn't matter if the contamination is low in the oil.