TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The metal compound (iia) is an iron complex selected from bis-cyclopentadienyl iron; substituted bis-cyclopentadienyl iron; and/or overbased iron soaps (preferably ferrocene). The amount of metal compound present in the composition is 3-1000 mg/kg. The organic compound (iib) is selected from a bicyclic monoterpene, substituted bicyclic monoterpene, adamantane, an optionally substituted bicyclic tetraterpene, and/or propylene carbonate (preferably camphor). The amount of organic compound present in the composition is 1-600 mg/kg.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The composition comprises conductivity improver (1-100000, preferably 10-1000 mg/kg); a combustion improver selected from: (iia) and/or (iib); and a dedicated asphaltene dispersant (0.1-1000 mg/kg). Preferred Components: The conductivity improver is selected from alpha-olefin-sulfone copolymer class-polysulfone and quaternary ammonium salt; polysulfone and quaternary ammonium salt amine/epichlorhydrin adduct dinonylnaphthyl-sulfonic acid; copolymer of an alkyl vinyl monomer and a cationic vinyl monomer; alpha-olefin-maleic anhydride copolymer class; methyl vinyl ether-maleic anhydride copolymers and amines; alpha-olefin-acrylonitrile; alpha-olefin-acrylonitrile copolymers and polymeric polyamines; copolymer of an alkylvinyl monomer and a cationic vinyl monomer and polysulfone; a ethoxylated quaternary ammonium compound; hydrocarbyl monoamine or hydrocarbyl-substituted polyalkylene-amine; acrylic- type ester-acrylonitrile copolymer and polymeric polyamine; and diamine succinamide reacted with an adduct of a ketone and sulfur dioxide. EXAMPLE - N-Tallow-1,3-diaminopropane (110 g), xylene (110 ml) and isopropanol (30 ml) were heated at 55-60 degrees C, was added epichlorohydrin (31 g) in xylene (75 ml). The reaction mixture was kept at 55-60 degrees C for 1.5 hour. The temperature was raised to 80 degrees C and held at 80 degrees C for 2.5 hours. Solid sodium hydroxide (13.3 g) was added, the temperature raised to 90 degrees C and kept for 2 hours. The reaction mixture was cooled to room temperature, and after work-up, a polymeric polyamine was obtained as a viscous polymer as conductivity improver D. 1,2-Dichloroethane (100 ml), acrylonitrile (13.25 g) and aluminum chloride (6.7 g) were mixed. Octadecene-1 (21 g) and azobis-isobutyronitrile (0.7 g) were added and the reaction system was purged with dry nitrogen for 1 hour. The temperature was raised to 65 degrees C and the polymerization was allowed to proceed for 24 hours. After work-up, a polymer (31 g) was obtained as conductivity improver F. A conductivity improver A comprising mixture of conductivity improvers D and F (50/50 wt./wt.%) were prepared. A hydrocarbon composition comprising the conductivity improver A and fuel oil were prepared.