Alkyl Benzene oils
Alkyl Benzene oils types were the first synthetic oils to be used in the refrigeration industry. They are thermally and chemically stable, and are perfectly miscible at low temperatures. AB oils are recommended for use with refrigerants such as R22 and HCFC blends. They are compatible with all traditional mineral oils which they can replace where the system malfunctions with the original lubricant. AB oils are normally for use with CFC or HCFC refrigerants and not normally recommended for use with HFCs.