How many bottles of refrigerant does a small car generally require?

[DelFinn]

Small cars generally require 4 bottles of refrigerant. Introduction to automotive refrigerant: Automotive refrigerant, also known as car coolant or commonly called "snow seed" in Chinese, is divided into environmentally friendly R134a and non-environmentally friendly R12. Since R12 severely damages the atmospheric ozone layer and produces greenhouse effects, endangering the environment on which humans depend, its use has been restricted and banned. Nowadays, most car air conditioning systems are environmentally friendly and use R134a refrigerant. Precautions for refrigerant charging: There should be a proper measurement when charging automotive refrigerant - too much is not good, and too little won't achieve the desired effect. Whether charging or discharging, professional tools and certain skills are required. It's recommended to have this done at professional repair shops or 4S stores for more professional and safer operation.