Quote:
Originally Posted by kfcgodsword
I would assume 91oct since it’s by far the most common here, there are very little stations where I live that go above 92oct, which is what I get from my local Chevron.
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I have always used Shell. I have a Mobil/Exxon card and I put 2 tanks of Chevron in to try it. I didn't notice any performance difference, but my mileage dropped over 2 MPG. I went back to only using Shell.