[Jcslocum]

The heat exchanger on the engine, on the pass side is an oil cooler. If it's spewing, you have a major leak. Might not be the cooler tho as there is lots to leak in that general area. Search for triangle of death and you will fin lots of info. I had a similar problem and it was the oil cooler leaking.

Have you inspected inside the fan, on top of the engine yet for mice nets? I had one in back on top of the cooler and they ate a hole in the top oil tube and more. Non fixable part. I picked up a used one and replaced it.