Firstly I would like to say hi to everyone I'm new to Cayenne ownership but have owned a few different Porsche's over the years. I have recently brought a 2008 Cayenne GTS in black. The car has 98000miles on it and drives very well. Has full service history, some main dealer and some specialist. I'm very please with the car and have carried out some routine maintenance brake disc/pads, ATF fluid change cleaned all drains out. Whilst checking the operation of the sports exhaust flaps which seem to not be closing. I pulled the vacuum line of one of the actuators and engine oil leaked out? I found oil the pipe all the way back to where the pipe runs up inside the front wheel arch. I checked the inlet manifold a looking inside there is a fine layer of oil inside, no pools of oil just a find mist. There is no smoke from the exhaust no CEL and car idles perfectly. My question is this what could cause the oil to get into the vacuum line? Could this be a failing AOS? Any advice would be much appreciated.
Randall
Randall