I run Mobil-1 0-40 in the winter to 4 or 5k miles, in the hard driving months I use their 5-40, and change it once or twice a month.
In any event, I switched to the Castrol Syntec 5w/40 on a free oil change given by my dealer at the 14,795 mile mark during an "oil consumption test". I'm happy to report that I have traveled exactly 6,000 miles om the Castrol 5w/40 and have not added any oil to my "R". Currently, I am down a half quart on the dipstick.
To that statement you should also add German made Castrol Syntec 0W-30, an oil that not only meets the 502.00 oil spec, but the far more stringent 503.01 spec as well.
I use Mobil 1 0W40, and have been going 4000 miles between oil changes.
just use Mobil1 0w40 or Castrol 5w40...both can be found at autozone and are 502 approved
Now i can notice a smoother iddle and the car seems to pull more even in the RPM. So far so good i'll trust MObil 1 till my next oil change but always be aware of what those dealership are doing seems like a big ripp off to me !!!
Easiest to find is Mobil 1 0W-40, Porsche's recommended fill.
I use mobil 1 0w40 and it makes a big difference
I've topped off with Castrol Syntec 5/40. The cap says Castrol on it and the manual says to use VW approved synthetic 5/40 so I figure I can't do better than that.
0w - 40 Mobile 1 was all I used for over 3 years, and the R was flawless until I sold her.
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