According to Toyota Reishi Freon specifications, R134a refrigerant is recommended for filling. The filling amount should be determined according to the refrigeration system capacity of the vehicle, in general, the filling amount is between 500 grams and 800 grams. In order to ensure the cooling effect and the normal operation of the system, it is recommended to refer to the vehicle's user manual or consult a professional technician when filling the refrigerant.