Fuel thickeners, Icing inhibitors for fuel systems, Synthetic waxes, Natural waxes, Paraffins, Petrolatums, Inorganic hydrides, Acid halides or its substitutes, Silicates, Silica, Silicones, Alumina and other aluminum compounds, Potassium permanganate, Inorganic acids, Inorganic metal salts, Inorganic oxides