A cooling probe device for cooling oil in a refrigerating compressor is described. It comprises a housing having a coupling for connecting same to a connecting bore of a sealed oil casing of a refrigerating compressor with the housing supported exteriorly of the casing. A pair of refrigerant conduits extend through a chamber of the housing and exit through the coupling a predetermined distance and terminate in a probe to feed a refrigerant gas to the probe through a first of the conduits and out of the probe through a second of the conduits. The predetermined distance of the conduits constitutes a bendable support connection to position the probe immersed in oil contained in the sealed oil casing. The conduits are sealingly connected to the chamber of the housing. The first conduit is adapted for connection to a low-pressure refrigerant gas source, while the second conduit is adapted for connection to a suction line of a refrigeration system whereby cool refrigerant gas is circulated through the probe to cool oil in contact with the probe.