Which of the following is essential for maintaining safety when working with oil appliances?

Regular testing for leaks is crucial for maintaining safety when working with oil appliances. Oil leaks pose significant hazards, including fire risks, environmental pollution, and potential health issues related to exposure to oil fumes. Implementing routine inspections and testing can help identify leaks early, allowing for timely repairs that prevent accidents and ensure the appliance operates efficiently and safely.

While wearing gloves, keeping tools clean, and using only OEM parts are important practices in general maintenance and safety, they do not directly address the immediate risks associated with oil appliances as effectively as leak testing does. Ensuring that there are no leaks is the first line of defense in maintaining a safe working environment with oil systems.