Engine oil leaks can occur at the rear main seal and/or intermediate support cover o-ring; a revised seal is available. A careful diagnosis with proper tools is necessary to verify dimensional accuracy of the crankshaft to engine block.Google+
Car Problem Reports
Porsche Boxster Rear main seal/intermediate support cover O-ring may leak oil
Porsche Boxster Problem
Average Mileage: 51,250 mi (16,000 mi - 78,000 mi)
Visitor, 1999 Porsche Boxster, 78,000 mi
leaking everywhere had to have it changed
Visitor, 1997 Porsche Boxster, 71,000 mi
oil smell, mech confirmed, rear seal.... ugg..
Visitor, 2004 Porsche Boxster, 47,000 mi
My real main seal started leaking right on schedule it seems.
Visitor, 2003 Porsche Boxster, 49,500 mi
Oil leak in area of main seal
Visitor, 2004 Porsche Boxster, 16,000 mi
leaks at rear main