Engine Oil Leak in rear crankcase

I have determined the oil leak seems to be coming from around the oil pan gasket or possibly from the rear (car rear) from a tube or pipe that is fastened toward the rear by a bolt. This is behind the engine. Possibly there is an o ring or gasket there that is leaking. I was able to tighten this bolt a half a turn or so but still seems to be oil sepage there. The leaking oil gathers right at the drain plug which I also replaced with a new Ford plug. I added a gasket sealer to the crankcase oil and that did not seem to work although the drip may have slowed either from that product or the tightened bold. All the crankcase bolts seem tight.

No, if the case behind the engine and to the rear of the car is the transmission. As if mentioned, there is a tube bolted to this case by a bolt which I tightened. The oil accumulates at the bottom of the drain plug and surrounding oil pan area and also on the heads of the front oil pan bolts but the area above is dry. Hope that helps.

I have the exact issue with my 2012 3.0 fusion. The oil is gathering at the rear of the oil pan and oil plug. It seems the oil is at times hitting the main belt to the rear of the passenger side tire causing oil to be thrown multiple areas. I am guessing the oil leak is the main rear seal or possibly coming from the bottom of the timing chain cover.