An article in the New York Times (September 29, 2016) titled “How do you make turbo engines more efficient, Just Add Water”, describes a technology by Bosch that sprays water on cylinders to cool combustion temperatures and increase engine efficiency by reducing engine size or increasing the compression ratio.  The projected reduction in fuel consumption is 4 to 13%. But the new technology will require customers to add distilled water and manufacturers to redesign intake ports. Will the additional demands on consumers to get this efficiency result in reduced adoption ? Should the size of this water container be adjusted to synchronize with oil changes so the consumer impact is limited ? Or should this water change be linked to windshield wiper fluid changes to make it easy for the consumer ?