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 [Internet]. 2026 Jun. 25 [cited 2026 Jul. 16];15(1). Available from: https://www.fountainjournals.com/index.php/FUJNAS/article/view/1060