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Vehicle Information: Model : 997 S cab; Year: 2006; Mileage: 14500;

I have been using Mobil One 0W-40 in my car since day one. A service manager in the local Porsche dealer just told me that the new recommendation from Porsche is 5W-40. Is that true? What is the benefit and can I mix the two if I am low between oil changes?

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