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Originally Posted by bmwm750
Delvac 1 is VERY good oil. You could probably run it in the Porsche, though depending upon how much consumption you have, it could potentially be not so good for the cats.
I've run Delvac 1 in many motorcycles with great results.
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According to Mobil, Delvac 1 meets SM standards. That should indicate that it has very little Zinc or Phosphorus, so it shouldn't have a negative effect on catalyst life.
http://www.mobiloil.com/usa-english/motoroil/car_care/askmobil/mobil_1_vs_mobil_delvac_1_for_a_gasoline_engine.as px
Related question: has anyone tried Quaker State Q horsepower 5w40 synthetic? It is supposed to be the same as one of the Shell Helix oils (Shell owns Quaker State) and is Ferrari approved.