Almost every station I go to has ethanol (up to 10%) added to gas. For a long time I had the option in my area to buy non ethanol gas but now it’s harder to find.
If a gallon of ethanol gets less mileage per volume than gasoline, then how is it better for the environment if I have to fill that much sooner on gas because the ethanol component lowers my tank range?
In: 101
Ethanol is not all doom and gloom it does have a few redeeming features, it boosts Octane 10 – 20% is a sweet spot, it helps reduce cylinder temperature.
As for energy density yes it’s going to reduce mileage, I’m surprised you’ll notice the reduction at 10% assuming equal octane ratings, as the car can advance timing to improve mileage both should have similar ranges.
Just don’t park up your car with ethanol in the tank it’s main issue is being a polar solvent meaning it’s water miscible so it will absorb condensation inside your fuel tank and then drop out of solution which isn’t great.
Just consider those who run E85, they do this due to increased power. And yes E85 will most certainly reduce your range but E10, yea I’m surprised you’d actually notice it.
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