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Thanks for all of these tips. I think I will give the 5w50 a shot. To be honest, I have zero idea about oil temps. I have no gauge. I would be surprised if they are not well controlled though. The mezger dry sump engines hold a lot of oil and coolant temps are rock solid. I did a track day in...

Hi all. I have a 2001 Porsche 996 turbo that has been running Mobil 1 0w40 since new. This is the factory full and have stuck with it. I am now considering switching to 5w50. The car only does c. 1000 miles per year. It does c. 3 track days per year, so maybe 200-300 miles of that is track...