Engine Oil Leaks on Porsche 911

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.

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Average mileage: 76,000 (50,000–113,000)
Engines affected: 3.6L 6 Cylinder, 6 Cylinder
9 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996, 1997, 1998
12 people reported this problem
2 people shared problem details
1995 Porsche 91165,000
Engine smoking at idle from driver side. Then, oil puddle found under car after winter storage. Upper valve seals need replacing. Done at dealer. Mid- price fix. Around $1000.
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Oil leak--What needs to be done. What is the cost.
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