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.
Engine Oil Leaks on Porsche 911
Average mileage: 76,000 (50,000–113,000)
Engines affected: 3.6L 6 Cylinder, 6 Cylinder
12 people reported this problem
2 people shared problem details
1995 Porsche 91165,000Visitor
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.
...r lube down the gear box and causes it to become completly wet and drip. Or could it be engine oil leaking out of the top of the engine on top of the gear box and running down. Do you think it is th...
Engine oil leaks can occur at the rear main seal and/or intermediate support cover o-ring; a revised seal i...
Valve cover leaks are common.
i have a oil leak coming fromaround the rear bumper shocks