As we recently reported, this year the diesel fuel may have only 50ppm sulfur, however according to national business paper Portafolio, Tomás González, Deputy Minister of Energy says this measure cost Ecopetrol more than a CoP$1T that went into expanding the production capacity of the Barrancabermeja refinery and associated transport logistics. Gonzalez added that it is important to improve engine performance and reduce exhaust emissions, as required by the Air Quality Law.