I just drained somewhere in excess of 16 quarts of fluid out of the crankcase. I had a normal amount of oil in there before - the rest is fuel.

Prior to oil change, level was normal. Following change it was checked/normal too. I added the normal crankcase capacity (9 quarts I think it is) during the oil change. I drove it about 200 miles in total since the oil change. Injectors were rebuilt because the engine was noisy and I am/was thinking it was worn injector pinging. Not sure yet. 500 feet driven since injectors reinstalled.

Also just removed the lift pump off the IP. No obvious signs of leakage. I used lung pressure to see if there was any leakage past the shaft (on the side of pump that's in the IP) and there was no detectable leakage past the shaft passageway.

I thus far have been unable to get the lift pump apart to get a visual on the internal seal.

Any suggestions?

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1986 300 SDL, gray on black, #14 head, 180K miles
1982 300 CD, silver on palomino, 290K+ miles [sold]
1980 300 SD, white on palomino, 500K+ miles when retired [uncle's car - inspiration for the above]