How reduce viscosity of heavy fuel oil?

To reduce the viscosity of heavy fuel oil, you can heat it, as increased temperature decreases viscosity. Additionally, adding viscosity-reducing agents or diluents, such as lighter oils or solvents, can also help achieve a lower viscosity. Mechanical agitation or blending with lighter fuels can further assist in achieving the desired fluidity. Employing these methods enhances the fuel's flow characteristics and facilitates easier handling and combustion.