The question is when we use these descriptions the words should accurately describe what we are talking about.
I see "Run Dry" should mean just that...."dry".
Did not Sikosky test a 92 MGB using the isolation concept and only terminated the test when the MGB had lasted longer than the max fuel endurance of the aircraft?
If a Glycol system fails to work as advertised, be it in cooling or just an indication that is working....then that machine has no "Run Dry" capability in reality.
So...if you want use some descriptive wording....or a design concept that requires coolant or trapped oil....is that a "Run Dry" Design?