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Good report, but it's only one report, and your baseline. Stop using a 5W30 oil. If you want to stay loyal to Mobil, and want an A40 Porsche Approved Oil, I'd recommend 5W50. That's what I use. If you drive in the cold months, switch over to 0W40. I use Mobil 5W50 from March till Ocober, and change every 5,000 miles. Car is hibernated in the winter.
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