Just put mobil1 advance fuel economy 0w-20 in my 2014 2.5l Altima. It has amazing reviews for gas mileage and engine noise improvement so I decided to try it. Deffinantly runs quiter. We will see for gas mileage. My question is this, so royal purple now has the 5qt jug of 0w-20 but it doesn't specify anything about fuel savings are all 0w-20 weights essentially going to save fuel due to it being 0w? What would you prefer in your motor between the two I listed here? I always liked rp but I hear realllly great things on the mobil1 so I'd love to get some opinions here
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