Ended up with a 25HP quincy 5120 recip air compressor. Was a backup for a screw compressor. There was some oil on the outside of the machine, and one of the intake air filters was soaked with oil. The intake is routed on the cylinder in question so the filter is almost upside down at an angle so any oil expelled would not be sucked back in when it starts and drips out of the filter outer cover when it formed a little pool in there of about 2 tablespoons. The other filter is also inverted and not wet. Just wondering if what I'm seeing is because of that and it would go away with the filter vertical and above the cylinder head (all the photos I've seen of these have the filters on stacks above the head) or if there might be an issue that would warrant further investigation. I was not able get any info and have not run it yet.