Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Refrigerant: Precaution
PRECAUTION PRECAUTIONS FOR REFRIGERANT HFO-1234yf (R1234yf) (a) Compatibility (1) The parts used in the refrigerant cycle, the compressor oil, etc. of an HFO-1234yf (R1234yf) system are not compatible with a conventional HFC-134a (R134a) system. (b) HFO-1234yf (R1234yf) Refrigerant (1) Always use HF ...
