A water-based composition for enhancing shine or gloss in an elastomeric surface is in the form of a stable aqueous dispersion having a pH of from about 6 to about 7 and containing by weight: less than 10% of at least one polydiorganosiloxane fluid; from about 0. A total amount of refrigerant in a refrigerant circuit 10 is calculated based on the calculated inner volume of the refrigerant extension piping and the current set of operation data, and the calculated total refrigerant is compared with a reference amount of refrigerant to determine a presence or absence of refrigerant leakage. A fastener may threadedly engage with the elongate member to reversibly keep the compressor component in place.