What can result from using incompatible hydraulic fluids?

Using incompatible hydraulic fluids can lead to several detrimental effects on a hydraulic system, making "all of the above" the correct choice.

When incompatible fluids are introduced into a hydraulic system, the chemical interactions between them can cause a decrease in operational efficiency. This may occur due to changes in viscosity, lubricant characteristics, or the fluid's ability to maintain pressure, all of which can result in decreased performance.

In addition, the use of incompatible fluids can lead to increased energy consumption. This typically happens when the system components have to work harder to compensate for the reduced efficiency, leading to higher fuel or energy requirements, further stressing the hydraulic components.

Most critically, incompatible fluids can cause system corrosion and failure. Different fluids may have various chemical properties, which can lead to inappropriate reactions with seals, hoses, or other metal parts within the system. This corrosion can create debris and contaminants, ultimately leading to significant damage and potential system failure.

Overall, the combination of these issues highlights why the use of incompatible hydraulic fluids is not merely a minor oversight but a serious concern that can compromise the safety and effectiveness of hydraulic systems.