Experimental study of improving Nigerian heavy crude oil (Agbabu bitumen) viscosity reduction by dilution with n-heptane, phenol, toluene, xylene, and naphtha. Fountain Journal of Natural and Applied Sciences, [S. l.], v. 15, n. 1, 2026. DOI: 10.53704/. Disponível em: https://www.fountainjournals.com/index.php/FUJNAS/article/view/1060. Acesso em: 16 jul. 2026.