I also have an M30 with the same hose set up and the same engine angle. If I
use that hose I can only remove 3 quarts of oil. The drain hose is on the high
side of the oil pan! If I use the oil fill and a fluid vacuum I can get 4
quarts out. Either way it never gets completely drained. I change
FYI, My Universal M4-30 diesel has an oil drain hose attached to the pan
bottom with a brass end fitting with a threaded plug in the free end. The
brass plug has a hole drilled through the square part that can be tie wrapped
to secure it safely. I typically run the engine till warm and then c
