How to Add Refrigerant Oil to a Car Air Conditioner?
2 Answers
Car air conditioner adding refrigerant oil method is: 1. Open the car hood and locate the air conditioner's high and low pressure pipes; 2. Check if the filling valve is qualified; 3. Connect the air conditioner's high and low pressure pipes to the red and blue hoses on the air conditioner pressure gauge equipment, then connect the yellow hose to the vacuum oil extractor for 15 minutes; 4. Turn off the vacuum machine and remove the high pressure pipe; 5. Add the appropriate amount of refrigerant oil through the compressor channel. The functions of the air conditioner are: 1. To cool, heat, ventilate and purify the air inside the car; 2. To provide a comfortable riding environment for passengers, reduce driver fatigue and improve driving safety.
Adding refrigerant oil to a car's air conditioning system requires special attention as it directly affects the efficiency and safety of the refrigeration system. I've done this many times myself. The standard procedure is to first connect a professional vacuum pump to evacuate the entire AC system, which removes air and moisture. Then, use an oil injection tool to add the refrigerant oil through the low-pressure port. The oil quantity must strictly follow the vehicle manual's specifications - too much increases resistance, while too little accelerates compressor wear. Remember to operate slowly during the process to prevent air bubbles from entering. After completing the oil injection, recharge the refrigerant and finally test the system pressure. Safety goggles and gloves are essential during operation as refrigerant oil can irritate the skin upon contact. Don't attempt this casually on your own - inaccurate oil measurement or system leaks can quickly damage the compressor. It's best to have this done by a qualified repair shop with proper tools and experience.
