TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The number average molecular weight (Mn) of component (B1) is 10000-80000 g/mol (preferably 20000-60000 g/mol). The number average molecular weight (Mn) of the ethylene-based copolymer of composition (C) is 2000-8000 g/mol (preferably 2000-6000 g/mol, especially 2000-5000 g/mol). The polydispersity (Mw/Mn) of the ethylene-based copolymer of composition (C) is 1.5 to 5. The component (B1) is a copolymer comprising 60-85 wt.% of ethylene and 15-40 wt.% of vinyl acetate. The ethylene-based copolymer of composition (C) comprises 80-88 mol% of ethylene copolymerized with 12-20 mol% of vinyl esters and optionally acrylates and/or methacrylates. The fuel additive is selected from wax dispersants, dispersants for polar substances, demulsifiers, defoamers, lubricity additives, antioxidants, cetane number improvers, detergents, dyes, corrosion inhibitors, metal deactivators, metal passivators and/or odorants. EXAMPLE - A monomer mixture containing 75.7 g dodecyl pentadecyl methacrylate (DPMA), 0.8 g methyl methacrylate (MMA), 0.02 g n-dodecyl mercaptane and 8.4 g 2,2-bis(tert-butylperoxy)butane had been prepared. The monomer mixture was fed at 140 degrees C for 5 hours to the reactor containing naphtha heavy solvent. The reaction was held for 120 minutes at 140 degrees C and cooled down to 100 degrees C. 0.15 g of tert-butylperoxy-2-ethyl-hexanoate was added. The reaction mixture was stirred for another 90 minutes at 100 degrees C to form corresponding polymer (A); 20 g of ethylene-vinyl acetate (EVA) copolymer comprising about 33 wt.% vinyl acetate and having a number average molecular weight of 36400 g/mol was solved in 150 g dilution oil by stirring the mixture at 100 degrees C overnight. The temperature was adjusted to 90 degrees C. About 80 g of dodecyl pentadecyl methacrylate (DPMA) containing 0.5% tert-butylperoxy-2-ethyl-hexanoate was added to the EVA copolymer solution over 3.5 hours. The reaction was maintained by stirring the mixture at 90 degrees C for another 2 hours. Then 0.2% tert-butylperoxy-2-ethyl-hexanoate was added and the mixture was hold for another 45 minutes to form corresponding grafted polymer (B). 85 gm of polymer (A) and 15 gm of polymer (B) was blended by stirring at 60-80 degrees C for 1 hour to form polymer (M1). 25 g of Keroflux (RTM: ethylene-vinyl acetate-acrylate copolymer comprising 86 mol% of ethylene, 16 mol% of vinyl acetate and 3 mol% of acrylate) was diluted with 5 g of solvent naphtha heavy at 90 degrees C for at least 60 minutes. Afterwards 70 g of Polymer (M1) was added to the polymer wax dilution and mixed at 90 degrees C for 1 hour to form test polymer. Polymer (M1) was used as control. The test and control polymers were tested in biodiesel blend for cold flow properties using e.g. the pour point (PP) test and cold filter plugging point (CFPP) test at 3000 ppm treat rate. The test/control showed CFPP blank value of -10 degrees C/-9 degrees C and PP of -18 degrees C/-12 degrees C respectively.