Mike,
I am sorry to hear of your misadventure here in Tejas, but I'm glad the end result was OK.
I have heard exactly the same explanations regarding the 8V92 engines. Because of the many, many passages required in the cylinder block and head due to the two cycle design, there are many areas that have to be sealed to keep air, oil, and water separate. Yes the O rings the separate those passages do dry out without freguent use causing issues like the one you had.
You are to be commended for being an alert driver. Others might not have noticed the fluctuating oil pressure until the oil light comes on. At that point it is probably too late. Your attention to the gauges probably saved you from a major engine rebuild.
__________________
Richard Rhonda Ty and Alex Entrekin
1995 Newell # 390 DD Series 60, Allison World Trans
Subaru Outback toad
CoMotion Tandem
Often wrong, but seldom in doubt
Rhonda's chronicle https://wersquared.wordpress.com/
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