When refrigerant leaks out of the system it also leaks oil out and just like an engine the air conditioning system has oil in it to lubricate the compressor and it’s associated parts. Just like an engine too much or too little oil is not a good thing. It’s impossible to know how much oil is in the system by just recharging. Also keep in mind the impact on the environment the refrigerant is having when you knowingly allow it to leak out.
For further information please check out our A/C Blog