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This could be another example of "faith-based" technology....that is, the more you believe it, the better it works.

The basic theory is pretty good but filtered down from big bucks generators to the stuff you see on eBay is questionable. "Mythbusters" did a piece on these HHOs and it didn't work, and the EPA tests just about every gas saving device known to mankind such as acetone, etc. and none of them have produced very convincing results, although a few have worked up to 5 or 6% improvement.

My feeling is that in the amounts of hydrogen generated by these little devices, it's not going to be enough to matter or to justify the expense. I may change my mind but that's what seems to be happening at the moment. The same is true for acetone. Believers get great fuel mileage, and skeptics using the same formula get nothing.

Go figure.

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In addition to Shifty's excellent points, the claims made by the hho bunch are particularly laughable - triple the mileage, that kind of thing. Pure nonsense.

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If something that costs that little could double mileage, as you are claiming, the manufacturers would be doing it. That simple.

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I have been running an HHO generator in my 2003 ford ranger 2.3 liter for over a month. I draw between 2 and 4 amps and have seen an 11% inprovement in gas milage. Now, I am running a test at twice the current, but will have to wait to fill up to obtain results.

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This Brown's Gas thing is a scam. Pat Gauss, Motorweek's resident technician went into great detail as to why this does not work. In order for the process to have any impact the amount of hydrogen gas would have to be enormous, you would literally have to have a tanker truck follow you around.

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The May 2009 issue of Car and Driver magazine ran an article " running your car on water"? The article seemed to give some credabilty to the concept.

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The May 2009 issue of Car and Driver magazine ran an article " run your car on water?" The article seemed to give some credabilty to the concept.

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