Abstract: Irritant-free gel compositions according to the present invention include less than 5 parts by weight of one or more marking agents, 0.25-2 parts by weight of a thickening agent; and 30-90 parts by weight water. The thickening agent is typically a vegetable gum. In some embodiments, the compositions may additionally include 20-60 parts by weight of at least one water-miscible solvent, such as monohydric alcohols, polyhydric alcohols and mixtures thereof. The water-miscible solvent may be methyl alcohol, ethyl alcohol, isopropyl alcohol, n-propyl alcohol, ethylene glycol, propylene glycol or a mixture thereof, and preferably a mixture of isopropyl alcohol and propylene glycol.

Abstract: An additive for gasoline comprises a polyoxyethylene sorbitol polyoleate. It may be provided to the gasoline, which is typically gasohol, as a dispersion in a gasoline - miscible solvent to typically provide an additive concentration in the gasoline of 100 to 1000 p.p.m. The additive acts to prevent formation of a separate alcohol-water phase in the gasoline by making the phase more readily dispersable in the gasoline.