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Use New API SP Oil in 2009 Boxster S?

  • 2009
  • Boxster S
Mileage: 
55 000
Engine
Los Angeles, 
California

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.  https://www.api.org/products-and-services/engine-oil/eolcs-categories-and-classifications/oil-categories#tab-gasoline

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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