did some cleaning up, found goo on cap terminals

Heya, i posted a couple days ago about my car bogging after hard shifts.
well today i did some checking, I cleaned my IAC, cleaned the TB, cleaned my MAF. checked my plug terminals and there was a blackish green goo on them, i wiped them clean. Any idea what it was?

also there was an oily substance in my intake tubing, around the MAF and inside the tube? Coud this be the oil from the air filter. the filter is new.

anyways whatever it was i fixed it, no more boggin, my guess it was that crap on the terminals i was like WTF.

lol i asked myself earlier if it was supposed to be there, i had this feeling there was but i didnt think so. I guess i was wrong.