Updated:

We reviewed 11 water fuel kits - only 3 met our criteria:

• Sizeable Fuel Savings - at least 40% more fuel efficiency
  
• Fast and Easy Setup - in only a few hours, even for novices
• Affordable Set-Up Cost (well under $100)

Gas4Free

Ease of Use
Fuel Savings
Customer Support
Environment Benefits

>>NEW<<
#1 Gas4Free

"The newest and best Water Fuel Guide on the market..."

By far the easiest-to-follow guide we came across - our own experience says you should set aside maybe half a day to buy the parts and get fully installed.

This is the only guide that assumes absolutely no knowledge of cars. Impressively, our support ticket was responded to in under an hour (although it could take a little longer at weekends), and there is an unconditional 8 week guarantee.

Best of all, the technology required is readily available and cheap - we were able to access all the parts needed for well under $50. Given that its proven to increase fuel efficiency by as much as 40%, you could well recoup your investment in under a week.

Installation works with any gas or diesel powered car, van, truck or SUV. Aimed squarely at car "novices", and still our top pick for 2008.

Sept 2008 Update : there is now a promotion running on the site, and it is temporarily available for $99 instead of $297 - as such, we recommend ordering sooner rather than later.

The Verdict: The new Gas4Free is a fast and easy setup; works for complete car novices; proven fuel savings of upto 40% - our top pick.

Also Recommended

#2 Water 4 Gas

Our second pick uses the same technology as our top pick - and again, we were impressed by the fast support, money-back guarantee and low setup costs.

The guide includes two bonuses (how to get the IRS to pay for your upgrade and how to make $300 an hour installing the systems for others, arguably worth the cost of the guide on their own.

All in all, its a great package which means you can be enjoying massive fuel savings for very little, very quickly. So why only four stars?

Well, perhaps we were spoiled by our top pick, but we found the directions a little harder to follow - and since ease of use is so important, we decided to knock off a star.

Not Recommended!

#3 Run Your Car On Water

Run Your Car On Water is one fuel cell guide you want to stay away from. Even though it is the most popular guide the quality of it is horrible.

There are little to no pictures and the content of the book is impossible to understand. If you buy this product make sure you have a Mechanical Engineer to install it.

Even though the sexy girl on their website tells you to buy it, DONT BUY IT!

We actually attempted to install this fuel cell but gave up half way as it just got way to confusing.