[dsraven]

valve cover gaskets are another common leak spot
sometimes a pipe adapter has been used to place the oil sender at a better angle for clearance and vibration can cause it to crack or the extended reach can aplify the vibrations and cause the actual sender to leak internally. I recommend to thoroughly clean the area, dry it then check for any obvious damp spots that may show up, missing or displaced gaskets, loose or missing bolts, etc. then, if all seems good, wrap a clean rag around the oil sender and oil line if applicable, run it for a brief period and shut it off. then check the area for leaks or damp spots and pull the rag to check for oil it may have caught from a sender leak. if nothing shows then redo the rag and run it again until you find something. sometimes looking up from the rear, transmission end, can help show up a problem.