How do we choose the good oils for compressors and refrigeration systems?

Thanks Majdi Quick Answer. I would like add some thinks about to choosing theright lubricating oil for the compressor has becomemore complex with theintroduction of new refrigerants. Table  gives some indication as to the suitability of the traditional and newlubricating oils. Compressor manufacturers should be consulted with regards to changing

 I hope useful to you thanks.

                           Table Choice of compressor lubricant

Refrigerant              (H)CFC        Service      HFC +    Hydro-       Ammonia

Lubricant                                        blend       blends   carbons

Traditional oils

Mineral                            *                **               X           * V                  *

Alkyl benzene                *                 *                **           * V                 **

Poly-apha-olefin             **                X               X           * V                 **

New lubricants

Polyol-ester                    ** M V       * M              V           * * V               X

Poly-glycol                      X                X               ** M       ** M              ** M

Hydro-treated                  X                X                X              X                *

mineral oil

Key

*      Good suitability

**     Application with limitations

X      Not suitable

M    Especially critical with moisture

V     Possible correction of basic viscosity

there are5 types of (floro cloro carbon) refrigerants ....every type need different oil type .