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My car lost all of its refrigerant. I went to mechanic he checked my entire ac system for leakage but couldn't find any. He pressurized the cooling coil and also compressor but he couldn't find any leakage. After that he refilled refrigerant only. I used it for six months but now again my refrigerant gets low. My question is that I am worried as he only filled refrigerant to the system is this ok as he didn't add any oil to the system. It is necessary to add oil or oil remains in compressor??? And what should I do as I lost refrigerant again My car is just 30,000 km driven .

DavidRecallsMonica
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Muhammad Ashar
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You clearly have a leak in your AC system as it is a closed system so the refrigerant had to have leaked out. Refrigerant leaks can be hard to find. They have special dyes and sniffers to help pinpoint the leak. When the refrigerant leaks out it is best to add some oil, but likely their is still enough oil in the AC system, so you are going to be OK. As @Paulster2 mentions you should take it to a mechanic who specializes in AC repair.

MJH
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