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Approval for E15 passes a milestone

EPA has informed the Renewable Fuels Association (RFA) that the RFA Model E15 Misfueling Mitigation Plan would generally be sufficient to satisfy the partial waivers’ requirement for a misfueling mitigation plan. The partial waivers allow fuel and fuel additive manufacturers to introduce gasoline-ethanol blends containing grater than 10% vol. and no more than 15% vol. ethanol (E15) for use in model year 2001 and newer light duty vehicles. (Earlier post.)

The waivers required each fuel and fuel additive manufacturer subject to the waivers to submit to EPA a misfueling mitigation plan (MMP) for EPA’s approval—and to implement the MMP prior to the introduction of the fuel or additive into commerce.

The partial waivers state than an MMP “must include provisions that will implement all reasonable precautions for ensuring that the fuel or fuel additive (i.e. gasoline intended for use in E15, ethanol intended for use in E15, or final E15 blend) is only introduced into commerce for use in MY2001 and newer light duty motor vehicle.

Reasonable precautions include measures for labeling E15 fuel pump dispensers, providing information on product transfer documents, and participating in a compliance survey. The RFA MMP generally meets those requirements, according to the EPA.

A company that wishes to use the MMP must seek approval from the EPA in writing. Before deciding whether to approve the MMP for a company, EPA aid it may seek additional information and/or require additional misfueling mitigation measures, on a company- and situation-specific basis. The company will also need separately to submit a survey plan for EPA approval.

With today’s announcement, EPA is clearing the way for E15 and allowing America’s ethanol industry to turn its full attention to educating retailers and consumers on the benefits of higher level ethanol blends and ensuring that state fuel regulations allow for their sale.

—RFA President and CEO Bob Dinneen

On 17 February, EPA approved health effects testing submitted by the industry and cleared the way for ethanol companies to register with EPA to offer E15. The RFA is aware of several ethanol producers that have submitted registration documents with EPA.

The next steps will include ensuring companies seeking to offer E15 are registered with EPA, they have submitted the Misfueling Mitigation plan, and are addressing lingering fuel regulatory requirements at the state level. Some states, including Iowa, Illinois, and Kansas, are prepared to welcome E15 and drivers in those states will be among the first to see E15 at the pump.




I would leave it at E10, make E85 more available for the 10 million vehicles that can use it in the U.S. and make ALL ethanol from cellulose or synthetically.


The only problem with this, is that there are large areas where only 1 grade is available. Right now in San Antonio E10 is everywhere, and you cannot find E0. If they adopt E15 then there will be no E10 available either. So it really doesn't matter what sticker they put on the pump warning people to not use this in pre-2001 vehicles, because there will be no other choice, as every gas station in town will be E15.


Then do blend at the pump, select what ever percentage you want and pay the price posted, but make sure it is cellulose or synthetic ethanol, better yet make is synthetic gasoline as well.

Stan Peterson

The urgent effort and request to make E15, is just a sign that the synthetic manufactured fuel industry has been successful, amid all the subsidies afforded them. Their annual production has now exceeded 10% of total US oil demand, and they are desperately seeking more markets.

It's also indicative that if fossil fuel were no longer availble at all, and were all the auto vehicles to eventually adopt VOLT technology, there would be no problem.

The US civilization would not need to return to the caves, as the synthetic fuels industry can alresdy provide enough fuel for All our Ground Transport needs.

So the fears of Peak Oil, are fantasies too.


It is a matter of economic pressure points, once oil gets expensive and everyone is bidding it up in an increasing demand market, then alternatives are explored.

The idea was if you had high enough taxes on gasoline, then it would move, but Europe has had those and alternative fuels have not thrived.

As long as the highest weighted factor is money, then the return is the most important and you do nothing until you have to. Cleaner air, less dependence and where the money goes are other considerations, but not when cash is king.


There is a clear relationship between MPG and ethanol content, it's clearly understood and accepted. However, there are subjective problems here. When engines are asked to produce anything more than cruise power, it's rare they use the lambda sensor, but rather operate in open loop (no feedback of air/fuel ratio). Meaning, the engine has no idea that the air/fuel ratio is not ideal due to the higher than planned for ethanol content.

This is generally noticed by drivers as a loss of power, loss of throttle response, and the knock sensor pulling timing, sometimes unsteadily. The bottom line is a less satisfactory driving experience.

My car, a 2003 Jaguar X-type clearly performs better with less ethanol content, as verified by the local "no ethanol" station and my ethanol content test kit.

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