Those are part of the Valve cover???? This is on the side of the engine block 1/2 way down-They're two round "covers" imbedded into the side of the motor. Do those need to be replaced at a certain mileage? BTW, how long before I have to replace the timimg belt? I have 104k....
Part of the valve cover gasket. If the black things are leaking as mine are. Should be cause the round things below that are steel freeze plugs. The valve cover gasket does deteriorate after time and does need to be replaced. Mine is leaking like that also.
Are you sure? Because all that is behind those are water passages. Touch the bottom of the black half circles and see if they are oily. I bet the gasket is leaking and just flowing down the side of the head.
You can see how thick the head is by looking for the line where it joins. But oil can pool up in those freeze plugs even with ver little leaking. Mine sorta weeps like you said, and after a little while sitting it will pool up there.