Confirm A/C system charge capacities directly from your Robinair A/C RRR machine for R-1234yf systems. Includes charge amounts and component oil capacities for vehicle model years 2013-2020 using R-1234yf refrigerant. Compatible with the Robinair AC1234-4, AC1234-4SL, and AC1234-4-230 recovery machines only. Database helps ensure the vehicle system is charged correctly with the correct amount of oil, per factory and OEM specification.