oil leak

1998 3.8 oil leak on passenger rear side of engine. Has metal tubing that seem to go in a loop from back side of engine back into engine. Was a slow leak but now will leak out most of oil during a few mile distance. Is a GTP with supercharger. 165000 miles. Happened after changing oil. Filter and plug are not source of leak. Is that oil cooler line leak? Low oil light and Aladins lamp light come on along with weird music from dash when leak became worse. Any ideas?

One thing to check is the oil pressure switch...it's in that area......usually leaks out of the harness attached to sensor.....

I agree with Tech II. The oil pressure switch is on the back of the block, passenger side, right behind the power steering pump. Not uncommon for the plastic housing where the wires connect to crack or separate from the metal base, causing oil leaks.