Shell v power nitro good for cayenne?

 

Marketing hype. I find Chevron Techron and Mobil better....

 

I think Chevron (not on east coast) and Shell the better of all Gasolines, due to the cleaning formulas. But it really is going to a high volume clean gas station and not driving on low fuel, and being old fashion, buy gasoline when the tank truck is there filling the station tanks. I used Mobil, Sunoco, and Shell, and really don't view much difference in performance. Its kind of like so many quality oils, we all have opinions. IMO, for our driving, it really doesn't matter too much.