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Old 04-05-2017, 07:10 PM   #1
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Thank you for the replies, good stuff to know as I look for a car. One more question, what is AOS?
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Old 04-05-2017, 08:29 PM   #2
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Thank you for the replies, good stuff to know as I look for a car. One more question, what is AOS?
Air Oil Separator (AOS).

Porsche Boxster Air / Oil Separator Replacement - 986 / 987 (1997-08) - Pelican Parts Technical Article

Be sure to get a Pre-Purchase Inspection (PPI) at a reputable Porsche shop before you buy the car. The inspection can provide advice on any near-term work that may need to be done like AOS, coolant reservoir, CV boots, etc.
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Old 04-06-2017, 02:59 AM   #3
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The general consensus is that the 06+ IMS has a reduced failure rate is street usage, but it's actually higher with track usage. If I'm not mistaken, this is according to the experts; Jake Raby/LN Engineering. As far as the actual failure rate, who knows, but it's certainly not zero!
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Old 04-06-2017, 09:30 PM   #4
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Nothing is zero

I have to challenge the PPI just a little. While a PPI is a good idea for any automobile as far as the IMS goes unless you have paperwork from a dependable shop that you can verify how can a PPI reveal anything about the condition of the IMS ?

Unless they drop the transmission to inspect and then you might as well replace ??
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Old 04-07-2017, 03:41 AM   #5
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I have to challenge the PPI just a little. While a PPI is a good idea for any automobile as far as the IMS goes unless you have paperwork from a dependable shop that you can verify how can a PPI reveal anything about the condition of the IMS ?

Unless they drop the transmission to inspect and then you might as well replace ??
I don't think anyone said the PPI would help with the IMS....but certainly will help determine the approx. condition of suspension parts, exhaust system, brakes and general condition of the vehicle. A good PPI would check for deviations, which might give you some indication....
But on an 06, I wouldn't be too worried about the IMS, provided it has the big, beefy one, which I believe all 06 and up have.
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