Where is the freon located on your 1993 Geo Prizm can you change it myself?
1993 Prizms still used Refrigerant-12, commonly known as “Freon”. Later models use R-134. Refrigerant is distributed throughout the system. The excess refrigerant and oil is held in the drier/receiver. If you have a tight system and can afford it, stick with the R12. You will not regret it. Retrofit to R134 can be very problematic and expensive.
