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Pastimes : Car Nut Corner: All About Cars
F 8.960+1.1%Aug 16 4:01 PM EDT

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From: miraje8/15/2019 8:57:48 PM
   of 3116
 
They just won't give up. Corn state pols of both parties keep trying to push more of this crap into our gasoline supplies. No need to rehash all the negative reasons to can the RFS and give us pure gas again, but the one fact that most people are unaware of is that the greater the percentage of ethanol in your fuel, the worse your MPG will be. Here's their latest push..

hemmings.com

Ethanol supporters ask Department of Justice to allow fuel blends higher than E15

Disappointed that a recent Environmental Protection Agency ruling effectively barred ethanol-blended fuels beyond E15, several groups of ethanol advocates have joined together to petition the U.S. Court of Appeals to reverse a portion of that rule and to allow blends of up to E30 and possibly higher to be sold at gas pumps across the country.

When the EPA permitted retailers to sell E15 in 2011, it only allowed sales for three seasons of the year. The ethanol in E15, like E10, pushes the fuel blend’s Reid Vapor Pressure to above the EPA’s recommended limits during the summer. However, while the EPA granted an RVP waiver for E10 decades ago, it didn’t do the same for E15 in 2011.

For the last few years, ethanol advocates lobbied hard to get an E15 RVP waiver and welcomed the EPA’s decision to do so back in May. “(E10 and E15 volatility) parity is essential to the future growth opportunities for ethanol,” the Renewable Fuels Association wrote in 2017. Indeed, the RFA welcomed the EPA’s decision to permit year-round E15 sales earlier this year, as did a number of other groups backing the waiver.

However, in determining whether E15 warranted an RVP waiver, the EPA considered whether E15 and E10 were “substantially similar” fuels and found that E15 stretched the “sub sim” rule, largely due to its incompatibility with vehicles built before the 2001 model year.

“We determined that E15 in these vehicles could lead to increases in emissions that result in vehicles exceeding certified emission standards and issues with materials compatibility as auto manufacturers likely did not use components compatible with ethanol in fuel systems,” the EPA noted in its ruling.

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Rest of the article at the link above..
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