Farhad Manjoo
The Hydro 4000: Save 60 percent on gas?
Does injecting hydrogen into your engine increase efficiency, or is this a myth that's already been busted?
I just got off the phone with David Havanich Jr., president of Green Machine Solutions, a company in Jupiter, Fla., that promises to increase your car’s gas mileage by as much as 60 percent.
The product is called Hydro 4000, a $1,200 device that sits under your hood and uses electrolysis to turn water into hydrogen and oxygen gas. The hydrogen and oxygen are then fed into your engine, and the mixture causes gasoline to burn more efficiently, Havanich says.
“Instead of having anywhere from 5 to 15 percent of your fuel not getting used and going into your catalytic converter, you can burn all your fuel,” he told me.
I learned about the Hydro 4000 from a local news report on WPTV Channel 5 in West Palm Beach. Jamie Holmes, the reporter there, was skeptical of Havanich’s claims, so he tried the Hydro 4000 on the channel’s Dodge Durango news van.
On a dynamometer — basically a treadmill for a car — the news van, running at 55 miles per hour for 20 minutes, got an average of 9.4 miles per gallon before installation of the Hydro 4000.
Holmes reports:
We then ran our truck on the street for close to a month with the Hydro-4000 running. The owners said this would give the device time to clean out the engine. We then put our vehicle back on the dynamometer, and did the same test all over again.And guess what? With the device on, we were now averaging 23.2 miles to the gallon. That’s 61 percent better than the gas mileage we were previously getting.
Channel 5′s math is off there; a jump from 9.4 MPG to 23.2 MPG is actually a 147 percent gain in gas mileage. Which sounds amazing, doesn’t it?
Havanich told me that Channel 5′s results were ideal, and that more typical driving conditions — i.e., not on a dynamometer — would yield something closer to a 20 to 60 percent efficiency gain.
But if gasoline prices keep going up, even the smaller gain could make a Hydro 4000 a good investment.
Unless, of course, the whole thing’s bunk. Which could be true: Hydrogen-injection devices aren’t new, and as in many debates about energy, there remains fundamental disagreement about whether they work.
The basic problem is this: The device uses electricity produced by your car’s alternator to electrolyze water into hydrogen and oxygen. Does the energy it uses for electrolysis exceed the energy it saves by making your engine consume fuel more efficiently — and is it, therefore, phony?
Depends on whom you ask. There’s at least one trucking company that swears by hydrogen boosting. And in online forums, some people report getting better gas mileage after installing such devices (just as WPTV did).
But there’s skepticism that drivers may have adjusted their driving styles after installing the hydrogen boost, and that the adjustment might be the true reason for the savings.
Many online point out that the Discovery Channel show “Mythbusters” once investigated hydrogen boosters and pronounced them busted: The booster device failed to produce much hydrogen at all, “Mythbusters” found.
But others criticize “Mythbusters’” methods there, and say that a more conventional test — such as WVPT’s — would have proved that the thing works.
So, the question still seems up in the air. Havanich offers a 60-day money-back guarantee on the device, so if you’re interested, you risk little by ordering it (you need to have it installed — and, if necessary, removed — by a mechanic).
I’m going to ask my bosses here at Salon to buy me a Hydro 4000 to review. If they go for it, I’ll let you know whether it works.
The thinking man’s action hero
Using paper clips, chewing gum, chocolate and down-home ingenuity, MacGyver always saved the day. Let's bring him back -- and give him a girl!
It isn’t necessary to explain how, in the pilot episode of “MacGyver,” our mulleted, Midwestern hero gets himself trapped inside a top-secret research bunker overflowing with sulfuric acid. Suffice it to say, he needs to find a way out, and probably soon (because government agents are fixing to fire a missile at the bunker to prevent the acid from spilling into a nearby aquifer). Plus, he has to save the people he has found inside (among them a gun-wielding climate scientist who wants destroy the bunker in an effort to set back research into an ozone-layer-ruining weapon of mass destruction). Fortunately, MacGyver has a few chocolate bars, a scrap of sodium metal, a cold capsule, a pair of binoculars and cigarettes.
Continue Reading CloseGoodbye to Machinist
Yo, I'm out.

Today much of the tech world is sad that the iPhone 3G’s launch is going so miserably. But I’m sad that it’s my last day at Salon.
I’ve accepted a job at Slate, where, starting next week, I’ll be writing a twice-weekly technology column. Machinist will go on a break for a week, after which a guest blogger will bring you the latest tech dish.
Continue Reading Close“True Enough” at Google, and in San Francisco
A YouTubey presentation of my book.
As I mentioned in the comments yesterday, I’m getting ready to depart this space; I’ll have a fuller explanation tomorrow, sometime before or after I get in line to buy the new iPhone.
In the meantime, I thought I’d add a note about one of the more fun events related to my book’s release — the opportunity I had, in May, to speak at Google’s headquarters in Mountain View.
Continue Reading CloseThe iPhone 3G reviews are in: It’s pretty good
But battery life suffers, and the GPS isn't as great as you hoped.
Walt Mossberg (WSJ), David Pogue (NYT) and Edward Baig (USA Today) have been using the new iPhone 3G for a couple of weeks now, and today they all dish on their experiences.
Continue Reading CloseScary! YouTube ordered to hand your viewing history to Viacom
But there's a silver lining to one of the most bone-headed legal decisions in recent times.
Update: This post has been updated with comments from Viacom.
In the fall of 1987, a freelance reporter named Michael Dolan learned that judge Robert Bork kept an account at Potomac Video, a D.C. rental shop. This was at the height of the contentious and ultimately failed Senate confirmation hearings for Bork’s nomination to the Supreme Court — so naturally, Dolan thought there was a story here, and he went to work on getting a peek at Bork’s video rental history.
Continue Reading ClosePage 1 of 143 in Farhad Manjoo
