Why are there pools of oil?

[Repoman]

. . . around all six of my coils in between the plastic partitions. I had the engine covers off looking for vacuum leaks today and noticed that all six have pools of oil around them. It doesn't appear that the oil is leaking over and spilling down the side of the engine, it's just sitting there in little pools. I have always done the oil changes and have never spilled a drop while refilling and can't see any place where it would be coming from.

Also, I found the dreaded cracked y-piping so I'll be changing that. When I removed the DISA valve, it appeared to be broken (no spring tension). I removed the little plastic cover on the side and saw that the lever had come off of the butterfly shaft. I simply put it back on and replaced the cover and now appears to be working fine. Are these things serviceable, and if so have we been buying replacement DISA valves for this reason?

Couldn't find any vacuum leaks other than y-pipe, ses codes are p1345, 1347, 1348, 1352, 0300, 0313. Going to replace y-pipe tomorrow but was reading up on ccv issues and thought I might be subject to that judging by my codes and rough idle/misfire issues. Also I read that these ccv's are poorly designed and destined to go out causing the kind of issues/codes I have.