Confirm A/C system charge capacities directly from your Robinair A/C RRR machine for R1234yf systems. This software update includes charge amounts and component oil capacities for vehicle model years 2013-2022 using R1234yf refrigerant. The database helps ensure the vehicle system is charged with the correct amount of oil, per factory and OEM specifications. Compatible with the Robinair AC1234-4, AC1234-4SL, and AC1234-4-230 recovery machines only.