I have been offered an '01 Boxster S that has a definite smoking problem. The price is low enough that I could put a used engine into it and still own it cheap. I have never seen so much oil smoke from an exhaust. When I test drove it the other day, cars behind me were stopping to wait for the smoke to clear so they could see the roadway, especially after slowing down and then accelerating after a turn. It is definitely NOT steam like from a head gasket. It is oil smoke.

Is there a good, hopefully cheap, reason for a Boxster engine to smoke this much? There is no blowby visible when I remove the oil filler cap. There is no miss or hesitation in the engine. It runs very well.

 

Never mind

Another automotive website has already answered my question without bothersome ads from online mechanics with boat payments due.

 

Just curious, what did they say?

 

It's the Air oil Separater or AOS. Do a google search for "Porsche air oil separater" and you will find the part for sale as well as installation instructions. Apparently it's rather common. Thankfully the small dealer who had the car didn't have internet access.