What should be done with the 1 oz of oil recovered during A/C refrigerant recovery?

When recovering refrigerant from an A/C system, managing the oil is important for maintaining system integrity and performance. The correct action with the 1 oz of oil recovered is to replace the oil with new oil. This is essential because the oil can become contaminated during the refrigerant recovery process. Contaminated oil can affect the lubrication of the compressor and the overall efficiency of the A/C system.

Replacing the oil ensures that the system has clean and effective lubrication, which is critical for its proper functioning and longevity. Oil performs several crucial roles, including lubrication of moving parts, sealing, and heat transfer within the system. By using new oil, you avoid potential issues that could arise from using oil that may have absorbed moisture or foreign particles during the recovery process.

In contrast, options that suggest returning the oil to the system, ignoring it, or changing all the oil do not address the risks associated with oil contamination or do not follow proper recovery protocols. Returning used oil could reintroduce contaminants into the system, ignoring it could lead to lubrication issues, and changing all the oil may be unnecessarily labor-intensive without addressing the specific concerns related to the small amount recovered.