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Originally Posted by cas951
10w-30 are listed in the owners manual. This depends on year.
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Don't go by owners manual when Porsche issues approval in a regularly updated TSB and the
approvals all have expiration dates.
You can read TSBs at RennTech if you are a contributing member. I highly recommend RennTech membership. It is pure tech w/o the OT fun and games. Access to a lot of documents.
Also the approved list I posted earlier was not all inclusive, just a sample showing the Mobil numbers relative to one other company.