The new fuel conceived for diesel engines is formulated using one part of standard diesel fuel and two groups of components with different characteristic rating. The first group is composed by reformulated chemicals, while the second group in made by a blend of vegetal oils properly balanced. The fuel obtained with this formulation has a better thermodynamic performance and allows an appreciable reduction of carbon dioxide (C02) and particulate matter (PT) output which are, respectively, approximately 50% and 60% lower.