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What type of freon does a 1993 Mercedes Benz e190 use?

The 1993 Mercedes Benz e190 uses R-12 refrigerant, also known as dichlorodifluoromethane (CF2Cl2). R-12 is a hydrochlorofluorocarbon (HCFC) refrigerant that was widely used in automotive air conditioning systems before being phased out due to its ozone-depleting potential. Due to environmental regulations, R-12 is no longer produced and is being replaced with more environmentally friendly refrigerants such as R-134a.