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Old 02-23-2023, 05:11 PM   #37 (permalink)
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Originally Posted by Caddylackn View Post
Around here they put 10% ethanol in the gas from November until the end of March, they say it is for emission reasons. BS. I would normally see a 8 - 10% drop in mileage when I was driving a gas vehicle. I went from 320 mile tanks to about 287 mile tanks before the fuel light would come on. How is burning an extra 1.5 gallons of fuel good for the environment?
Isn't it 10% ethanol year-round? By the BTU numbers, adding 10% ethanol reduces the energy content of fuel by around 1.5%, so ~5 miles of your tank range reduction is due to the ethanol.

This is worth a watch. It gives a nuanced view on adding ethanol to fuel:

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