Over time, the engine can leak oil at various locations. Early-production vehicles require engine disassembly and modification to resolve leaks at the cylinder heads, oil return tubes, valve covers, timing cover, chain housings, case through bolts, and lines to/from the oil cooler.
Car Problem Reports
Porsche 911 Engine Oil Leaks
Porsche 911 Problem
Engines Affected: 3.6L 6 Cylinder, 6 Cylinder