I found this during the installation of the MD 5/16" iso-thermal spacer over the weekend. (The install went fine BTW with no problems and no SES lights. The renewed engine power is awesome!). As you can see in the pic below, 5 of the 6 manifold ports are dirty and oily, and only 1 port looks pretty clean. Is this something I should be worried about, or should I just let it be? BTW I have an '03.5 AT and no oil consumption issues or sludge problems.

 

Didnt you already post this?

 

Yes but I didn't get any straight up answers I was looking for. I'm hoping my sedan comrades can pull through