Measurement at 2:30pm, 22 hours after start - #1 at 49mm or 5mm drop. The high (intake) end of the piston is no longer submerged. #2 at 49.2 or 0.2mm drop.

Given this and BenzDiesel's still not trivial oil consumption I guess it's back to the 3.0 block

Sixto
93 300SD