Water4Gas Review Resource - Version 1.0 Water4Gas Review Resource - Converting your car to run on water is proven to lower fuel costs, increase mileage - and help the environment. ++++++++++++++ We decided to sit down and review these new guides - our key criteria were ease-of-use, affordability of materials, and speed of installation.+++++++++++++ Overall, we were pleasantly suprised with the results - the water4gas technology evidently does work.