Hydraulic Pump Efficiency
As shown in Figure 1, maximizing hydraulic pump efficiency is achieved by having optimal fluid viscosity and by resisting changes in viscosity throughout wide temperature changes and over time. Your hydraulic fluid must be able to provide an ideal balance between mechanical efficiency and volumetric efficiency.

Simply put: the viscosity of the hydraulic fluid must be thin enough for the pump to start easily, especially at low temperatures, and to prevent it from working too hard (mechanical efficiency), but be thick enough to prevent internal pump leakage, loss of pressure and provide effective lubrication (volumetric efficiency).

How Much Fuel Can Be Saved?
A field trial was conducted to show you just how much fuel could be saved simply by using an energy efficient hydraulic fluid. The field trial was conducted on an excavator with dual piston pump feeding three piston motors (running at 90% throttle).

See, the energy efficiency battle can be won! When used in conjunction with integrated maintenance protocol, a higher quality hydraulic fluid can help increase pump efficiency, lower your diesel fuel consumption and CO2 emissions, increase equipment productivity, and more.