How often should oil be added to the oil reservoir according to proper maintenance practices?

• A. Daily
• B. Weekly
• C. According to the manufacturer's recommendation
• D. Never

Answer: (C)

The main idea is that oil topping and level checks should follow the equipment maker’s guidance. Each machine is designed with a specific oil capacity, consumption rate, and lubrication schedule, so the correct interval for adding oil is defined by the manufacturer rather than a fixed daily or weekly habit. This ensures you keep the oil at the proper level and viscosity for optimal lubrication, avoiding overfill, foaming, or under-lubrication that can damage components. In practice, you monitor the oil level and add only as the manufacturer recommends, which accounts for operating conditions and wear. Daily or weekly additions aren’t universally correct because some systems use oil more slowly or may need only occasional top-ups, while “never” would ignore essential lubrication.