secondary wall former the secondary wall former is preferably selected from the group consisting of quaternary dimethyl diacyl amines polyoxyethylene acyl alcohols sorbitan fatty acid esters and ethoxy sorbitan fatty acid esters in a further embodiment the lipid bilayers may also contain a charge producing agent e g dimethylstearyl amine dicetyl phosphate cetyl sulfate phosphatidic acid phosphatidyl serine oleic acid palmitic acid stearylamines oleylamines and mixtures thereof in a particularly advantageous embodiment the fuel additive and or liquid energy source may contain a polymeric dispersion assistant often when a fuel additive is combined with the fuel a cloudy mixture results which is aesthetically undesirable and may lead the vendor or customer to conclude that the fuel is adulterated or spoiled the liquid energy source containing the polymeric dispersion assistant is transparent in one embodiment the polymeric dispersion assistant may be a polyoxyethylene polyoxypropylene glycol block polymer of the following formula str4 where the values of x y and z are each independently integers between about 1 and about 100 preferably the average value of x and the average value of z are each independently between about 2 and about 21 and the average value of y is between about 16 and about 67 in one advantageous embodiment the average value of x and the average value of z are each independently about 3 and the average value of y is about 30 in another advantageous embodiment the average value of x and the average value of z are each independently about 6 and the average value of y is about 39 in yet another advantageous embodiment the average value of x and the average value of z are.