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I think an independent test was run by a German magazine but I couldn’t read it. The Porsche oil was high up in the results.
I heard that when Porsche used to recommend Mobil 0W40 it was because the Euro formulation was different than the 0w40 in the US. No idea if it’s true but the BMW guys have shown the German Castrol is an entirely different oil than US oil so it is possible....
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Jeff
74 911, #3
I do not disbelieve in anything. I start from the premise that everything is true until proved false. Everything is possible.
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