The EPA is in the business of controlling emissions through regulation. In automobiles, the fuel is regulated, the engine is regulated, simple enough. Home-brew fuels are not legal simply because they're not controlled, tested, proven to be compliant with emissions regulations, and it is financially impractical for the EPA to do so, therefore it is not allowed. Same deal for WVO etc. "conversions", they are not tested, controlled, therefore they are not compliant with automotive EPA regulations.

It will not surprise me to see the EPA begin to crack down on converters such as Lovecraft, Greenbenz, Greasecar, and others to make them "not legal for highway use". Then the cars would need to be labeled as not legal for highway use once the conversion is installed, and not legal to license or drive on the street unless the manufacturers go through the necessary testing to prove that the emissions from a converted vehicle are within applicable limits. Of course there is still the issue of the fuel you'll be planning to burn in that car, which would also need to be proven compliant etc., way too complicated and expensive to be financially practical on a home-brew scale.

Mixing your own biodiesel will probably never be legal, but like brewing your own beer in the basement, it will only be an issue if it becomes noticed.

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Gone to the dark side

- Jeff

The EPA is entirely based on whatever the latest mindless environmental "fad" is. So, even though it's been PROVEN and SHOWN that diesel vehicles are better with emissions than gassers, the EPA still makes it a PITA for companies to bring diesel vehicles into the U.S.

Think about this: the U.S. is one of the ONLY countries in the world that didn't sign the Kyoto Protocol... interesting, also is one of the countries with the FEWEST diesels anywhere in the world.

The EPA is a joke.

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'79 300SD
'82 Chevy Chevette diesel

Which is one of the few SMART things our government has done. Not only does the KP not do anything useful (see the extreme pollution in China) but it would also require us to waste billions of dollars on developing nations "and supply technology to other countries for climate-related studies and projects."

That may be but like any governing body they make the rules. Nobody has the right to pick and choose which rules they want to follow and which they want to ignore.

Nobody? But what if I want to modify my emissions equipment?

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'79 300SD
'82 Chevy Chevette diesel

"Off road use only".

Since of course emissions from vehicles operating on private property can't get into the atmosphere.

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1982 240D automatic
Odometer quit at 307K...about 325K now

Brewing your own beer in the basement is perfectly legal in the US, subject to certain restrictions (200 gallon per year limit, can't be sold, etc.)

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1982 240D automatic
Odometer quit at 307K...about 325K now

Did you show your work and properly notate your nomenclature??

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1987 300D (230,000 mi on a #14 head-watching the temp gauge and keeping the ghost in the machine)
Raleigh NC - Home of deep fried sushi!

Yes.