The Porsche TSB has 0w-40, 5W-40, and I think one (Mobil 1 Peak Life) 5W-50 from various companies. Temp use ranges are listed, as are countries/areas of the world.
I use un-approved Motul 300V in 5W-40.
Some of the approved oils are barely adequate, and some I would not use if they were free. There is a world of advice available.
Use an ACEA A3/B3 or API SL or better. No SM or CJ oils.
Call or e-mail Charles Navarro at LN Engineerin for help/advice.
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Mike
04 Boxster S - Basalt/Savanna, 6sp, Carrera lites, hardtop
70 914-6 - Black over tan, original/stock
PCA since 1970
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