teumer by Ohio Attorney General Betty D. Montgomery How To Keep Cool Over j a Automotive Air-Conditioning / / ( \ Singer Nancy ... But wait a before you haul your car in for repairs, here are some tips you should know about. ... The refrigerant in all but the newest cars is called chlorofluorcarbon-12 (or CFC- R-12 , or the brand name Freon). ... Because CFC-12 wona#39;t always be available, it may be time to switch to a new type of coolant if your air-conditioner needs a lot of repair.