Patent ID: 8183187

Claim:
A lubricating composition comprising: (a) an oil of lubricating viscosity; (b) a friction modifier; (c) a corrosion inhibitor; (d) an antiwear agent; and (e) a product prepared comprising heating to react together: (i) a dispersant; (ii) 2,5-dimercapto-1,3,4-thiadiazole or a hydrocarbyl-substituted 2,5-di-mercapto-1,3,4-thiadiazole, or oligomers thereof; (iii) a borating agent; and (iv) terephthalic acid; and (v) optionally a phosphorus acid compound, said heating being at 80-200° C. to provide a product of (i), (ii), (iii) and (iv) and optionally (v), which is soluble in an oil of lubricating viscosity.