The octane rating of your fuel does not in any way affect the emissions of your car[0]. You should use whatever octane-rated fuel that your manufacturer recomme

The octane rating of your fuel does not in any way affect the emissions of your car[0]. You should use whatever octane-rated fuel that your manufacturer recommends. Using a higher-rated fuel will not confer any additional benefits whatsoever onto your car. [0]https://www.sierraclub.org/sierra/ask-mr-green/does-premium-high-octane-gasoline-pollute-less-regular-gas https://www.sierraclub.org/sierra/ask-mr-green/does-premium-...