Porsche 997.2 4S: I had an oil leak 8 months ago. Undercarriage inclusive panels are oily from mid car to exposed engine on passenger side. Smal puddle (3" diameter) of oil on the floor passenger side in front of rear tire. Brought it to the shop, they cleaned, drove without panels. Nothing, no visual leaks, no more oil on floor. I picked the car up drove it with no issues.

Last Saturday I drove the car 200 miles, came back and my rear bumper was oily. Same again undercarriage oily, small puddle on the garage floor. Same area, same spots. Brought it to the shop, they cleaned, added dye to the oil, drove it, nothing. Can't find the leak. Also checked transmission. All good. The engine block is clean. This is so weird. Any ideas? Is there any other place where oil can exit through a valve or vent?

 

Did you check oil level? If there's oil on the ground and on body panels there's a leak from somewhere. Keep looking.

 

The AOS is on the passenger side. It's plastic and if it cracked it might drool oil when under enough pressure. Just a thought.

 

Did you check the oil canister seal?

 

This would be handy. Maybe it’s just loose and needs to be torqued down properly. I hope it’s this simple for you

 

Thanks for all the replies. No leak found so far. We took all the panels off and I'm driving the car. No gravitational drops on the floor, all clean since the initial happening.
The oil level went a little down, not much. AOS seems to be ok. Will update when something comes to light. I was wondering, could I have accidentally overfilled during
my last oil change and some oil was pushed out while I was driving fast in higher revs (PDK)? The gauge showed all bars after the oil change.