Which of the following is not an advantage of manual lubrication?

Manual lubrication offers several advantages that make it a viable option in certain situations, but when it comes to safety, this method has inherent limitations. Manual lubrication often involves human interaction, which can expose workers to potential hazards related to both the equipment and the lubricants being used. For instance, the operator may come into direct contact with lubricants, which could cause skin irritations or other safety incidents if proper precautions are not taken.

Additionally, the manual process may involve working with machinery that is in operation or in inaccessible positions, increasing the risk of accidents. Often, automated or centralized lubrication systems are designed to minimize these safety risks by reducing the need for personnel to be in close proximity to moving parts and hazardous substances.

This context highlights that while manual lubrication is indeed easy to apply, allows for equipment inspection, and typically has a low upfront cost, it does not inherently prioritize or ensure safety to the same extent as more automated systems may.