3811 Anti-knock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anti-corrosive preparations and other prepared additives, for mineral oils, incl. gasoline, or for other liquids used for the same purposes as mineral oils

3811 (01/1988-..) Anti-knock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anti-corrosive preparations and other prepared additives, for mineral oils, incl. gasoline, or for other liquids used for the same purposes as mineral oils 38111110 (01/1988-..) Anti-knock preparations for motor fuels based on tetraethyl-lead 38111190 (01/1988-..) Anti-knock preparations for motor fuels based on lead compounds (excl. tetraethyl-lead) 38111900 (01/1988-..) Anti-knock preparations for motor fuels (excl. those based on lead compounds) 38112100 (01/1988-..) Prepared additives for oil lubricants containing petroleum oil or bituminous mineral oil 38112900 (01/1988-..) Prepared additives for oil lubricants not containing petroleum oil or bituminous mineral oil 38119000 (01/1988-..) Oxidation inhibitors, gum inhibitors, viscosity improvers, anti-corrosive preparations and other prepared additives for mineral oils, incl. gasoline, or for other liquids used for the same purposes as mineral oils (excl. anti-knock preparations and oil lubricant additives)