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1996 993 Turbo smoke

Engine

Vehicle Information: Year: 1996; Engine (Size, Modifications): 3.6; Total Mileage: 19,000;

My 993 Twin Turbo (which I have owned for aproximately 14 months) is letting off white smoke (from either or both exhaust pipes) when cold, after sitting for at least five days. The longer the car has sat unused the more significant the smoke. After sitting for 5-7 days, the smoke will last for a couple of minutes and then goes away. After sitting for 14+ days, the smoke will last for 5-7 minutes and then stops. It may also occur later the same day after sitting for a couple of hours, but to a lesser extent. The smoke problem first occured aproximately 5 monthes ago after I had the first oil service performed. Porsche Filters were used and Mobil 1 15W50. Currently, the oil level on the dipstick appears to be within normal range. The gauge, however, is at the bottom. I brought this problem to the attention of two dealers while the car was under warranty (CPO). They both told me that this is normal and that nothing is wrong with the car. Two outside mechanics have told me that some smoke on startup is normal, but not to the extent my car is smoking. I am asking Porsche to correct the problem under warranty. The position of the dealer, however, is that no problem exists. Please give me some guidance and your opinion as to whether I have a problem or not. Why did the problem first appear after the oil change? Why is the smoke more significant the longer the car sits unused? Please let me know if you nead any additional information.Thank You,Andrew

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