French oil company Elf has developed a diesel fuel that is about 10% water, to reduce pollution from buses and lorries.
The company said its Aquazole product is a stable emulsion made up of approximately 13% aqueous solution (water and anti-freeze) 2 3% surface-active additives and 85% conventional diesel.
Tests on three buses in the French town of Chambery over the past year indicated that the fuel cut emissions of NOx by 15 30%, particulates by 10 50%, and black smoke by 30 80%.
Further trials will soon be under way Chambery plans to run its entire 50-bus fleet on the fuel, and another town, Givors, has begun trials on two vehicles.
Elf will also make a technical presentation to the European Commission to get Aquazole included in the Auto-Oil 2 talks, which are intended to recommend new fuel standards for implementation in 2005.