Posted 12/31/2025 10:51 (#11490739 - in reply to #11490704) Subject: RE: Jd 3020 engine swap
Faunsdale, AL
I believe I would pressure test the oil cooler before I tore anything else down.
If it was the opposite, coolant in the oil, I would drop the pan and pressurize the cooling system. Have seen a couple times when an overhaul was done or a head gasket was replaced and the problem remained afterwards.