My knowledge is based on information available , and regulations and recommendations might have changed since then.
When it comes to refrigerants used in cars, it's crucial to follow the manufacturer's guidelines and use the refrigerant specified for your vehicle. For most small cars, the manufacturer would specify the appropriate type of refrigerant to be used in the air conditioning system.
R-134a refrigerant is commonly used in automotive air conditioning systems in many vehicles manufactured since the mid-1990s. It replaced the older R-12 refrigerant due to environmental concerns and is considered safe for use in automotive applications.
If your small car's air conditioning system requires refrigerant recharging or maintenance, it is best to consult the vehicle's owner's manual or contact a qualified mechanic who is knowledgeable about automotive air conditioning systems. They can determine the appropriate type and amount of refrigerant needed for your specific vehicle.
Using the wrong type of refrigerant or incorrect procedures can damage the air conditioning system, pose safety risks, and may also be illegal. Therefore, always follow the manufacturer's guidelines and seek professional advice when dealing with automotive refrigerants.