Re" That lift pump would have to be blasting fuel out of the shaft area into the crankcase for it fill it with 8-12 quarts of fuel in a matter of 3 hours total running time (200 miles) since changing/verifying oil level."

In retrospect 8-12 quarts (2-3 gallons) is a lot less than my SDL will burn in 200 miles or 3 hours time. Just saying that I'd have to believe the pre IP delivery system has the flow capacity, thus could be the source. Your "shaft" concept may have some merit. I'll keep looking for ya Mr. Luke.

__________________

1986 300SDL 440,xxx