The present invention relates to refrigerant compositions comprising a fluorocarbon,
an oxygenated lubricant, a non-oxygenated lubricant, and a compatibilizer. The
present invention further relates to methods for replacing a chlorofluorocarbon
and/or hydrochlorofluorocarbon and a non-oxygenated lubricant composition with
a fluorocarbon and an oxygenated lubricant composition in a compression refrigeration
system without flushing residual non-oxygenated lubricant from the system.
