This disclosure provides methods for inhibiting corrosion in a closed loop systems in which a heat transfer fluid is in contact with a corrodible aluminum surface by combining a corrosion inhibitor composition with the fluid. The corrosion inhibitor composition comprises an organic acid component that includes at least one of (i) an aromatic dicarboxylic acid, an aromatic tricarboxylic acid, or salts, anions, or derivatives thereof; (ii) an organosulfonic acid or a salt or anion thereof; and (iii) an amino dicarboxylic acid or a salt or anion thereof.