What is the filling amount of automotive air conditioning refrigerant oil?
2 Answers
Automotive air conditioning refrigerant oil filling amount: 150 grams to 200 grams for single air conditioning small cars, 200 grams to 250 grams for dual air conditioning small cars. The filling amount varies for each vehicle, so it is essential to check the vehicle's refrigerant and refrigerant oil filling amount specified on the nameplate. Precautions for refrigerant oil filling: 1. Do not mix different brands of refrigerant oil, as chemical reactions caused by different antioxidants in various brands can lead to deterioration; 2. Refrigerant oil is highly absorbent and, under the influence of oxygen, can produce an acidic substance similar to oleic acid, which corrodes metal components, so the refrigerant oil container should be tightly sealed immediately after use; 3. Do not use deteriorated refrigerant oil; 4. Refrigerant oil does not provide cooling and can hinder the heat exchange efficiency of heat exchangers, so only the specified amount should be added, and overuse is strictly prohibited to avoid reducing cooling capacity.
I've driven several types of cars and encountered issues with the air conditioning system. The amount of refrigerant oil to be added isn't fixed—it depends on the specific vehicle model and compressor type. Generally, small cars require around 100 to 150 milliliters, while SUVs or larger vehicles may need over 200 milliliters. The key is to follow the instructions in the car's repair manual and not guess on your own. Adding too little can cause compressor wear and shorten its lifespan; adding too much can reduce the AC's efficiency, resulting in less cool air. I once tried a DIY refill but got the amount wrong, which made the AC much noisier. It was only fixed later by a professional technician. I recommend paying attention to the AC's cooling performance in daily use. If you notice anything unusual, check the refrigerant oil level promptly and top it up appropriately. In short, avoid random operations to prevent spending extra money on compressor repairs.
