
A device called the "Hydro-4000" claims to inject hydrogen into your car's engine, synthesized from water using power from your car, to increase the efficiency of the combustion in the chamber. A local news crew in Florida tested the device on a news truck and claimed the Hydro-4000 increased their fuel efficiency from 9.4 MPG to 23.2 MPG after a one-month road test.
But something's screwy. Look at these numbers:
Once done, we found that even with an oil change, clean air filter and proper tire pressure, we were averaging roughly 9.4 miles to the gallon.
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% better than the gas mileage we were previously getting.
We also road tested the device. There we averaged 16-point-one miles to the gallon, which is 58% better than before.
So they were getting 9.4 MPG before, then got 23.2 MPG after, but that's only a 61% increase? (I'm not a mathlete, but even without a calculator I can see we should be looking at triple-digit percentage improvements.) And then they "road-tested" it but didn't get as much efficient as they did on the dyno, which makes sense, but also makes me question how they were measuring fuel efficiency in the first place.
Farhad Manjoo talked to the president of Green Machine Solutions who makes the device; he's trying to get one for review.
So what's going on here, huh? I'll throw out my usual disclaimer: If these things worked as well as they claimed, why aren't they installed in cars at the factory? I wonder if it's just somehow cleaning out the injectors and bringing the vehicle more closely in line with its original capability.
Device promises to save 60% at the pump [WPTV.com] (Thanks, Mark!)
Product Page [Hydro4000.com]