Patent ID: 7732389

Claim:
A method of reducing the traction coefficient of a lubricant composition comprising a basestock selected from API Group I fluids, API Group II fluids, API Group III fluids, esters, polyalkylene glycol, alkylated naphthalene, or poly alpha-olefins oligomerized from linear C5 to C14 alpha-olefins, the basestock having a viscosity of at least 100 cSt at 100° C. (ASTM D-445), said method comprising blending a traction reducer in an amount in the range of 30 to 70 wt % based on the combined weight of said basestock wherein the traction coefficient of said lubricant composition is less than the traction coefficient of said basestock for every percent slide-roll ratio greater than or equal to 5, measured over the operating range of 0.1 to 3.5 GPa peak contact pressure, at −40° C. to 200° C. lubricant temperature, with a lubricant entraining velocity of from 0.25 to 10.0 m/s, said traction reducer further characterized by being miscible with said basestock, selected from API Group V or a non API category hydrocarbon fluid and having a viscosity of less than or equal to 3 cSt at 100° C. (ASTM D-445).