How to Add Refrigerant Oil to a Car Air Conditioning Compressor?
2 Answers
To add refrigerant oil to a car air conditioning compressor, follow these steps: 1. Open the front hood and locate the high and low-pressure pipes of the air conditioning system; 2. Check if the filling valve is qualified; 3. Connect the high and low-pressure pipes of the air conditioning system to the red and blue hoses on the air conditioning pressure gauge device, and connect the yellow hose to the vacuum oil extractor; 4. Close the vacuum machine and remove the high-pressure pipe; 5. Shake the bottle up and down before use and add an appropriate amount from the compressor channel. The car air conditioning system, short for the car air conditioning device, is used to adjust and control the temperature, humidity, air cleanliness, and air flow inside the car compartment to an optimal state. It provides a comfortable riding environment for passengers, reduces travel fatigue, creates good working conditions for the driver, and ensures driving safety.
I previously added refrigerant oil to my old car myself, and the process was quite meticulous. First, you need to locate the oil fill port on the compressor, which usually requires removing the wheel arch liner to access it. Use a syringe to draw the precise amount of refrigerant oil—I prefer using PAG46. The key step is evacuating the air conditioning system; I rented a vacuum pump set and ran it for half an hour to ensure no air remained. After adding the oil, you’ll need to top up the refrigerant according to the vehicle’s manual. The entire process took me three hours, and I recommend beginners prepare antifreeze gloves—getting refrigerant oil on your skin is unpleasant. Remember, overfilling can cause the compressor to make a muffled noise, while underfilling leads to faster wear.