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Northern Nebraska | That is a reason it's not the only reason. Oxygenates are also the cheapest way to raise octane ratings. Besides emissions there are also horsepower benefits to oxygenated fuel. If the fuel can have its own supply of oxygen it creates a better burn even if not all exhaust gasses were purged in the last stroke. This is why top fuel drag cars run nitromethane. It's already 52% oxygen.
While your query is correct, the gasoline doesn't need oxygenate to combust. No one is selling non-oxygenated passenger car fuel in the United States. Even ethanol free gas runs isobutanol as an oxygenate. It just cost significantly more than ethanol. | |
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Educate me on ethanol
