Hey everyone, so today I swapped out my spark plugs for the first time and on the 4 bangers you have to remove the intake to get to the coils and plugs. I'm a bit of a noob and so I was trying to free up the connections on the intake from the wrong side. (basically, you have to flip the intake over to get it out of the way, and i was trying to free up some connections to get it to flip in what I didn't yet realize was the wrong direction)
Anyway, I accidentally removed this part in the picture and this slightly pressurized fluid started to leak. I immediately put it back in its place, and am now wondering what exactly was leaking and does it need to be refilled somehow.