rating above 91 is usually good anywhere, be aware though, high octane value can be achieved with added ethanol (alcohol). Too much ethanol in fuel will cause the check engine light to come on (I got the light using Sunoco twice, they put ethanol in 91 grade here in Canada). Shell does not put any ethanol in their 91.

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2007 4.8i Space Grey, 20", black nevada interior
All options with no 3rd row, rear entertainment,
handling pkg.