Oil leak

[Olegreen96]

I have an oil leak similar to the ones in the pictures. The pictures are from a thread in 2012 but the solution was never stated. Oil dripping off oil filter and above at the block off plate and dripping off the starter. 

[Jglew82]

Pan gasket and/or rear main seal and plate gasket are common causes of this. Currently have this issue on my 6.0, but I'm waiting until cooler weather to address it. 

[CamGTP]

Though it's a more rare issue, the valley plate gasket can leak at the back side and where the oil pressure sending unit threads into the top, that can slowly seep oil too.

[Olegreen96]

Only problem is I’ve put dye in my system and there is no trace of it on my sending unit and my fly wheel is dry as a bone 

[CamGTP]

The crank sensor could be leaking too. That is right above the starter and has an o-ring gasket on it.