If a hydraulic fluid has a low tendency to cavitate, it is less prone to which issue?

If a hydraulic fluid has a low tendency to cavitate, it is less prone to which issue?

• A. Cavitation
• B. Leaking
• C. Overheating
• D. Foaming

Answer: (A)

Cavitation happens when pressure in the fluid drops below its vapor pressure, causing vapor bubbles to form and then violently collapse as pressure rises. A hydraulic fluid with a low tendency to cavitate resists that bubble formation, so fewer vapor pockets develop and there are fewer violent collapses. That directly reduces cavitation-related problems like erosion of pump and valve surfaces, noise, vibration, and flow instability. The other issues listed—leaking, overheating, and foaming—come from different causes (seal integrity, heat from shear or inefficiency, and air entrainment), so they’re not the primary consequence of a fluid’s cavitation tendency. So, the fluid is less prone to cavitation.