Functional fluid composition for imparting lubricating power to a hydraulic system, additive package for imparting lubricating power to a hydraulic system, method for imparting lubricating power, braking system, use of a fluid composition and use of an additive package

摘要

The functional fluids of the present invention comprise about 50 parts by weight to about 99 parts by weight of a glycol component and about 0.3 parts by weight to about 10 parts by weight of one or more additives including a phosphate content. Desirably, in one aspect of this invention, the functional fluid composition exhibits an average scar width according to ASTM D 2670 (100 lb break-in for 1 min, 200 lb load for 30 minutes) that ranges from about 0.05 mm to about 0.45 mm, an average tooth count according to ASTM D 2670 (100 lb break-in for 1 min, 200 lb load for 30 minutes) of less than about 15, or both.