Have a 05 dodge that is leaking oil from the back of the motor. does not seem to be leaking from the oil cooler or from the valve cover. Is there any other place that it could possibley leak from back there

 

It's up high on the block or lower on the passenger side towards the back

 

It seems to be high on the drivers side, but there is so much oil under there it so hard to tell, i was 3 hrs from home when i spotted the oil leaking on the ground.I kept adding oil to get it home and used 2 gal by the time i got home, so it a good size leak. That morning when i started it up it was idling ruff and blue smoke was coming out of the tail pipe, but it cleared up after a bit, never had that happen before.