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Old 08-03-2022, 03:19 PM   #9
DreamSign
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Join Date: Jun 2022
Location: Sunny Silicon Valley, California
Posts: 79
For the '99 5 speed I just went to my local Porsche dealer and bought 3 quarts of the special gear oil, since it is 'special' :0)

So no one has any reason to NOT continue using synthetic 5w-40 engine oil for my '99 2.5 l base model with the 40-100 F ambient temps where I live?
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