[Funracer]

My experience using the Porsche plug tool:
http://forums.pelicanparts.com/porsche-911-technical-forum/1049412-6-spark-plug-then-happened.html

Any idea when was the last time the plugs were changed? In my case I know it was over ten years as the PO had owned it for that long and told me he had never done anything to the car except had the oil changed.