![]() Hydraulic fluids that take the heat are formulated with stabilizing anti-oxidant additives that extend service life. Oxidation of fluid can result in thickening, viscosity increases, the formation of sludge-like contaminants, and varnish deposits on internal components. ![]() The rate of reaction accelerates as temperature increases, as does the presence of catalyst metals like copper and iron, especially at temperatures above about 90° C (200° F). ![]() ![]() Higher temperatures can cause oxidation-the reaction of the fluid and its constituents with oxygen. An important characteristic of many hydraulic fluids is the ability to maintain performance at high temperatures. ![]()
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