FUTUREHYDRAULIC.COM

The main drawback of all current hydraulic systems is that they require an expansion tank, which increases the weight, volume, and price of the hydraulic system... Another drawback is the oxidation of the fluid (oil) which decreases the stability of hydraulic fluid and results in formation of acids that can increase the fluid viscosity and can cause corrosion. Polymerization and condensation produce insoluble gum, sludge, and varnish that cause sluggish operation, increase wear, reduce clearances, and plug lines and valves