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Cake day: June 30th, 2023

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  • It is, old cars don’t do well with ethanol gas but it doesn’t affect modern vehicles. Ethanol is great in modern turbocharged direct injection engines as it increases the latent heat of vaporization of the fuel, which cools the charge when fuel is injected. I had a Ford Fiesta ST that ran E40 (mixed E85 and 93 in the tank) and it allowed me to run the boost to the limits of what the turbo could do. That little 1.6L engine had 300ft-lb of torque at 2000rpm, it was wild. All that ethanol did a great job preventing detonation at high boost / low rpm. The downside is higher ethanol makes for worse gas mileage as it’s not as energy dense, and I believe it emits more CO2. There’s also food vs fuel and corn subsidies issues with ethanol as fuel.