Valve cover leaks are common on Porsche Boxster

Problem Description and Possible Solution
Valve cover leaks are common.
Problem Data
RepairPal Verified
Average mileage: 104,200 (90,000–118,400)
14 model years affected: 1997, 1998, 1999, 2000, more2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
16 people reported this problem
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leak @ #1,3 &4 spark plug tube seals
replaced spark plug tube's