Abstract: An anti detonation additive for fuel includes ethyl alcohol, and a stabilizer which contains ricinoleic acid. Also a fuel is provided with this anti-detonation additive.

Abstract: A device for producing emulsions, suspensions and the like of at least two media has a substantially tubular reservoir provided with a first inlet at one axial end so that a first medium is supplied substantially in an axial direction, a second inlet for a second medium provided in a substantially tubular wall of the reservoir so that the second medium is supplied into the reservoir substantially transversely to the axis and therefore to the first medium to produce a mixture, and an outlet for discharging the mixture of the first and second media, means for imparting vibrations and located downstream of the first inlet.