RPM and stock 360 pan

I think it becomes a game of words at some point. There is a marginal amount of oil in the first place, so the addition of a HV pump tips things over the edge. So the HV pump is to blame for sucking the pan dry as (presumably) it would not have been sucked dry with a standard pump.....just almost sucked dry. You can bet that when the standard pump is 'not sucking the pan dry' it is sucking a lot of air along with the oil.