Fuel/water emulsions

A process for preparing fuel/water emulsions, comprising the steps of charging an aqueous solution of a mixture of water-soluble and gasoline insoluble emulsifier components (A), (B), and (C), from 0.5 to 8% by weight of hydrogen peroxide and a stabilizer to a mixing zone containing a regular or premium grade gasoline fuel, wherein said emulsifier components are added at a total of from 0.5 to 5% by weight, and wherein said emulsifiers are of the formulae

• (A) is R—O—(CH2CH2O)x—H
• where R is alkyl or alkenyl having in each case 8 to 18 carbon atoms or C9-C14-alkylphenyl and x is a number from 8 to 30,
• (B) is an ethylene oxide/propylene oxide block polymer of molecular mass between 2000 and 10,000 units in which the proportion of the ethylene oxide units is between 40 and 80% by weight of the molecular mass, and
• (C)
• where x is a number between 10 and 30, and wherein said stabilizer is a poly(alkylene glycol) of molecular mass between 1000 and 10,000 units, stirring the mixture followed by ceasing stirring, allowing two phases to form, followed by commencing stirring again and emulsifying the fuel therein.