How to Determine if the Air Conditioning Lacks Refrigerant Oil?
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Methods to determine if the air conditioning lacks refrigerant oil: 1. Check the compressor's operation for friction and wear; reduced compressor lifespan indicates insufficient refrigerant oil. 2. Refrigerant oil serves as a seal in the compressor; refrigerant leaks suggest insufficient oil. 3. If the compressor's moving parts feel excessively hot, it may indicate a lack of refrigerant oil. 4. Increased friction noise between the car compressor's components could be due to insufficient refrigerant oil. 5. With the air conditioning off, observe the refrigerant level through the sight glass; if the level is below half, it indicates a lack of refrigerant oil. 6. Since refrigerant oil also seals the air conditioning compressor, a pressure test can be conducted. If the system shows no leaks but the pressure is too low or unstable, it suggests a lack of refrigerant oil.