if I raise my SD up by the front, with the rear tires on the ground, the engine tilts at a pretty steep angle, I bet there is at least 1 qt left in the pan with that tilt. then if you lowered the motor to get to the filter, changed it, and raised it back up to check the plug, I bet oil from the back of the pan as well as from the filter housing would be evident.
so, I wonder if it is oil in the filter housing, or mostly from the rear of the pan?
Hmm.
That is why i posted the earlier question about how best to drain the oil.
John

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!

1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!