Jon, you were right. Not the rear main seal. My son and I took the trans, flywheel, clutch and bellhousing off. Dummy over here forgot to install both of the rear oil galley plugs.
We installed the plugs with a little anaerobic sealer, then a little rtv on the outside edges after the install. Will let that stuff set up until tomorrow and will pre oil the motor again. If no leaks, put it all back together again.
