1B-2 AIR CONDITIONING GENERAL DESCRIPTION Caution: This Vehicle is equipped with Refrigerant-134a (R-134a) air conditioning system. R-134a and A-12 systems require different types of lubricating oil. Components designed solely for use with one re- frigerant and oil type must never be interchanged with components designed solely for use with another refrigerant and oil type. Refer to “ON-VEHICLE SERVICE” for Precautions for R-134a Air Conditioning system in this section. Air Conditioning Refrigerant Cycle Construction N1A0045E