First off if it is low of refrigerant then it has a leak. It is illegal to add refrigerant to a A/C system without first repairing the leak. You have neither the tools nor the skill to repair the leak, and to add the correct amount of refrigerant. Take it to a professional shop with the proper equipment and knowledge to repair the system correctly.
Auto air conditioning
Can be added with refrigerant check can contents
Your car contains no Freon R12, it contains R134 which is not Freon. If you need to add refrigerant then you have a leak. It is illegal to add refrigerant without first repairing the leak. Take it to a professional and get the leak repaired.
To add refrigerant to a Dodge Dakota find the suction hose of the A/C system. On the suction hose locate the port to add more refrigerant to the system.
134a refrigerant
Many home AC units are sealed, and there is no way for a homeowner to add refrigerant.
Many home AC units are sealed, and there is no way for a homeowner to add refrigerant.
You add refrigerant at the low pressure port but you do not add Freon. You add R134/134a. If you are having to add refrigerant then you have a leak that needs to be repaired first.
If you are having to add refrigerant, then this means you have a leak, and you will be adding refrigerant again in a few months. It is illegal to add refrigerant to a system with a leak without first repairing the leak. So, my advice is to take it to a professional and have the leak repaired and refrigerant added with the proper equipment, which you do not have.
You do not as R134a is what is approved for that car. If you could find R12 it would cost you near $100.00 a pound.
To add refrigerant to a Hyundai Sonata first find the inlet for the low pressure charging port. Be sure the vehicle takes 134a refrigerant and use the can of freon to appropriately add the proper pressure to the car. Overfilling the freon into the vehicle well lead to cooling issues.
Take the car to a service center which is equipped for this. You must be careful how much you put in or you will blow the system...........Then you pay.
Do not add refrigerant. You must completely evacuate the system, then fill it _by_ _weight_ to prevent overcharging. Overcharging can cause leaks and/or compressor failure.