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Originally Posted by Paul
Unless something is leaking above those 2 plugs, the oil is coming from the spark plug tube seals. Any chance the old plugs were loose and were allowing the tube to leak?
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Until this service (120K) which I am performing myself, the car has been at the Dallas Porsche dealer (Park-Place) from day one for all services. Only in the past year, since I have officially owned the car, have I started to take it to an indie for some repairs (engine mount, 1 axle, water pump...)
So I bet the plugs date back from the last scheduled service ( I need to check the records).
One of my colleagues who is particularly mechanically inclined told me today that it is quite normal for plugs to develop leaks over time as the metal they are made of expand while the ceramic doesn't. To be honest, his perceived authority on the matter seemed good enough to convince me...
All plugs are now new and I will most certainly check them regularly to see if the condition develops quickly or not...
thank you for all your help Guys!