Comments by "JackTannehillPromoter" (@njsongwriter) on "5 Car Myths You Actually Can Fall For | Proven OR Debunked? Part 1" video.
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I agree that there is no science that backs up the idea that using premium fuel will increase fuel economy, however there is evidence that ethanol-free fuel is more efficient than fuel containing ethanol. Probably not more efficient so as to save you money because ethanol-free fuel usually cost more and is often only available in the premium grade. Running ethanol-free will give you 3% to 4% better fuel efficiency but it will only save you money if you can find it in the regular 87 octane grade if that's what your vehicle calls for and then it would also need to be priced the same. Still, some of us follow the logic that says, if it's more efficient then it must be better for the engine. Maybe, maybe not? Personal decision. Some of us eat organic food. Others don't think it makes a difference.
Ethanol contains roughly one third less energy than ethanol-free (also known as non-ethanol) gasoline does, which means you will get slightly fewer miles per gallon if you use E10 or E15. The fewer miles per gallon you get is small, but measurable.
Due to the absence of ethanol in this fuel type, it offers a couple of advantages, including; improved gas mileage, reduced engine damage risk, and a shelf life of up to 6 months.
Ethanol-free gas is also better for the engine. There have been reports of engine parts rotting as a result of ethanol-mixed gas. By its very nature is that ethanol attracts water and might be harmful. Customers can choose between ethanol-containing gas and ethanol-free gas at various gas stations all around the United States.
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