Most vehicle owners know that Freon is the refrigerant in a car AC system, but may not know that there are different types of Freon.
Freon is a brand name used to refer to several different refrigerants. Years ago, car air conditioners used R-12 Freon, but it was outlawed by the EPA because its chlorofluorocarbons (CFCs) contribute to the depletion of the ozone layer. A new cleaner, safer Freon formula is used today.