Posted 1/11/2019 15:23 (#7237878 - in reply to #7237672) Subject: RE: John Deere 4640 w/ hyd oil in engine
Fruita CO
Some engines had a hollow dowel pin in the crankshaft flange. If it cracks it lets oil leak from the center of the clutch into the engine.
If your breather cap was plugged, keep watching it, it's actually more common for the engine oil to go into the trans.
John Deere 4640 w/ hyd oil in engine
