Oil Leak. Worse when towing..pcv?

[INGRED]

I recently started leaking oil especially under a load (small utility trailer)... I had my car guy clear the vent hole in behind the alternator, which made it a little better. Could this be a need to replace my oil return hoses? Turbo seal? I can not find the exact location of the leak, but it is in the area of the turbo. Any suggestions?

[JRL]

Turbo return line dump tube seal?
Very common