The air conditioning system on your vehicle must be charged with HFC-134a refrigerant (R-134a) or similar operating material, fully equivalent to the specified in its properties. Using a different refrigerant will cause serious damage to the air conditioning system and will require a complete replacement of the system.
It is not recommended to release the refrigerant into the atmosphere. Refrigerant HFC-134a (R-134a), used in Mazda vehicles, does not have a harmful effect on the ozone layer of the atmosphere. However, the release of refrigerant into the atmosphere may contribute to global warming to a small extent.