Spark plug tubes or O ring?

[greenheckler]

All,
I am new to DIY maintenance on my 2001 boxster base (90K miles). I just replaced the serpentine belt and all filters. I would like to replace the plugs and was planning to buy the spark plug kit from Pelican. My local Indy informed me that there is some oil coming through and that I would need to replace the O rings.

2 questions:
1. Does the 2001 have O rings or tubes or both?
2. I have Wayne's book and does not go into detail on the replacement of tubes or Orings. Would anyone be willing to provide more detailed instructions on how to do this?

Thank you

[garrettoomey]

There are 2 o-rings on each tube.

[fullthrottle52]

Search the DIY section for spark plug tube replacement. There are several walk thru's there.