Reservoir Low Caution is triggered when fluid quantity is less than?

• A. 60% remaining
• B. 50% remaining
• C. 30% remaining
• D. 10% remaining

Answer: (A)

Hydraulic system health is monitored by alert levels tied to the reservoir’s fluid quantity, and the idea is to give you early notice before you reach a risky low. A Reservoir Low Caution fires when the reservoir falls below 60% of its capacity. That 60% mark is chosen to alert you while you still have a comfortable margin to maintain control and plan for replenishment on the next opportunity, rather than waiting until you’re closer to a critical level. As the fluid drops further toward lower thresholds, you’d face more urgent indications and greater risk to hydraulic performance, so 60% is the early warning point that best balances safety with operational planning.