Fully-synthetic, polyalkylenglycol (PAG)-based, ammonia-(semi)-soluble refrigeration oils for NH3 and hydrocarbon refrigerants.;RENISO PG 68 and RENISO GL 68 are designed for compressors in industrial and commercial refrigerating units using ammonia as a refrigerant for direct expansion (DX)systems.;The oils are successfully used in applications where the compressor operates under high thermal loads. RENISO PG 68 and RENISO GL 68 are also suitable for hydrocarbon refrigerants. Fulfill DIN 51503 KAB (miscible with ammonia) and KE.