What kind of freon does a 1991 Chevy Caprice use?
1991 Chevy Caprices used R12, also known as Freon-12. Keep in mind that R12 is no longer manufactured due to its ozone-depleting properties. If your Caprice needs refrigerant, it must be converted to a compatible alternative like R134a, which requires specific modifications and should only be done by a qualified technician.