Thread: 158k high mileage oil recommendations ?
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Old 07-10-2019, 02:06 AM   #11
10/10ths
"50 Years of 550 Spyder"
 
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Join Date: Jun 2015
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Porsche oil viscosity has evolved.....
....PORSCHE now recommends 5w-50 for the 986.

See here:

https://www.porsche.com/usa/accessoriesandservices/classic/genuineparts/producthighlights/motoroil/
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