RENISO PAG 1234 is based on special double-endcapped polyalkylene glycols (PAG) and contains a high-performance additive system in order to cope with the special requirements in mobile air conditioning Systems (MAC).;Especially the chemical stability in combination with the new refrigerant R1234yf was optimized by choosing a new additive technology for RENISO PAG 1234. Also the refrigerant miscibility of RENISO PAG 1234 is favourable: a safe oil transport is guaranteed, no matter if R134a or R1234yf is used as refrigerant. It is suitable for both HFO-1234yf and R134a.;RENISO PAG 1234 shows excellent wear protection in all common compressor types, especially axial piston compressors. Effective antiwear (AW) additives combined with the special double-endcapped PAG base fluid secure outstanding lubrication properties.;RENISO PAG 1234 also fulfills highest requirements with regard to the thermo-chemical stability in R1234yf cycles.;RENISO PAG 1234 fulfills and exceeds DIN 51503 KD.