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Use New API SP Oil in 2009 Boxster S?

  • 2009
  • Boxster S
55 000
Los Angeles, 

2009 Boxster S has direct fuel injection (DFI).  I have been using dealer-spec Mobil One Full Synthetic 0W-40, which has the API "SN" spec,  There is a new API "SP" oil spec designed to minimize low speed pre-ignition (and fuel dilution) in DFI engines.  However, their web site indicates that 2020 and older engines should use the SN spec.

My oil analysis was fine except for showing some fuel dilution.  Any thoughts on whether the SP would be a better choice for my Boxster?  Thanks!

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