I was in the process of swapping some NGK iridium's in my '05 c230 k
4dr. sport when I discovered no. 2 plug came out completely covered in oil with oil showing at the bottom of the thread hole. All other plugs were dry. Buttoned everything up without swapping new plugs and checked the oil level read out. Days before I had completed a spring oil change. Oil level checked out as normal. Started the engine as before with no indication of any problem. What is happening here.- posted
15 years ago