Z Premium Refrigeration Compressor Oil 68 - 5 Litre, synthetic polyol ester (POE) lubricant formulated specifically for use in refrigeration and air-conditioning compressors using HFC refrigerants. The grade is formulated from specially selected deep hydro finished lube base stocks to provide low pour point, dryness, good chemical stability. It is recommended for wide range of refrigeration compressors, both reciprocating as well as rotary, using ammonia and carbon dioxide.