Sportster Oil Pressure and Dynamics

[bustert]

explain how do we test an oil line????
a good reading for you is the "API" which is the accepted safe practices adopted bt the american oil institute. while this is not written law, the epa and mms will issue citations based off of it.
i am glad you resolved the issue with the flooded suction side, more realistic but still there is a lot you have not addressed and never will be able, back to the water well pump.
what are you really seeing imploding or exploding gases?????
then there is the issue of the oil itself, new vs used changes dramatically even with short service hours, then there is the additive packages which varies widely.
then there is the issue with: there are 3 ways that gaseous existence can display itself and varies with the oil types and chemical compositions.
all this proves your calculus is near spot on but all moot, yes, MOOT, since it does not reflect real world conditions.
the pressures in the engine has been a bone of contention in many threads but it must by physics as you say be the law of averages. that said, i doubt seriously that the hd engine produces enough sustained vacuum to effect the oil at all. it is DIFFERENTIAL that moves oil. impingement is likely to be the major factor.