hobdayd Posted April 26, 2018 Share Posted April 26, 2018 Hi, I just opened the top lid on the engine to replace the air filter. Inside the engine compartment was very dry and dusty except for the distribution tube and resonance tube...there was a witness of an oil film. (The other parts that show no dust are clean and dry and have been in contact with the underside of the noise deadening from the cover). The car has used no oil since I brought it 2,000+ miles ago and it does not drip any fluids so I was surprised to find this witness film. With the engine being so dusty a few drops of oil would go a long way... Anyone know what might be causing this? Is there a breather tube that might be blocked? Is it easy to disassemble these parts for further inspection? Thanks for your input in advance. Link to comment Share on other sites More sharing options...
extanker Posted April 26, 2018 Share Posted April 26, 2018 is that the power steering reservoir cap behind the bellows ? that could be the oil leak source if it was over filled once . check any AOS /intake hoses too Link to comment Share on other sites More sharing options...
Mavrik Posted April 27, 2018 Share Posted April 27, 2018 Good shout on the power steering pump/cap? Link to comment Share on other sites More sharing options...
hobdayd Posted April 28, 2018 Author Share Posted April 28, 2018 Extanker, yes it is the power steering reservoir. It's a possibility. The reservoir is pretty full. Up to the max. One advantage of the dust on the engine is you can see where the slight oil stain is easily. I have no smoke, no misfire, no codes but I have just ordered a AOS replacement and will have a good look when I replace it just to be on the safe side. Link to comment Share on other sites More sharing options...
extanker Posted April 28, 2018 Share Posted April 28, 2018 i would not replace the AOS until i knew for sure that was the source Link to comment Share on other sites More sharing options...
hobdayd Posted April 28, 2018 Author Share Posted April 28, 2018 Why...it can't hurt can it. I will do it myself. £70 total then good for another few years. Also, I will check all AOS hoses are clear. Link to comment Share on other sites More sharing options...
hobdayd Posted May 4, 2018 Author Share Posted May 4, 2018 Ok. Replaced AOS today. PITA Job due to access to clips on bottom 100mm long hose so ended cutting hose and replacing with new. Nothing at all found. AOS was clear, pipes in and out were clear and no oil found on intake or vacuum tubes. I think the engine has just accumulated 12 years of grime and has never been cleaned so that's my next job. Oh well, peace of mind and only cost £75 in total. And the AOS from Design911 was a genuine Porsche part. Link to comment Share on other sites More sharing options...
Popular Post hobdayd Posted June 23, 2018 Author Popular Post Share Posted June 23, 2018 Quick update...just took the car down to Italy via Germany and Austria throwing in some great mountain passes. 2,300 miles in all. Not a drop of oil or coolant consumed. Very happy! Now I must clean the engine bay... 2 Link to comment Share on other sites More sharing options...
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