How Often Should Car Air Conditioning Compressor Oil Be Replaced?

[AmirRose]

It is generally recommended to replace car air conditioning compressor oil once a year. Detailed explanation as follows: 1. The compressor acts as the engine of the air conditioning system, compressing and driving the refrigerant (coolant) circulation. Components like the compressor, condenser, and evaporator are costly and time-consuming to replace. The refrigerant and compressor oil in car air conditioning systems should be inspected and replaced annually to ensure proper functioning and extend the service life of major components. 2. When replenishing refrigerant to the air conditioning system, failing to add compressor oil or adding excessive amounts can cause serious issues. Insufficient oil leads to inadequate lubrication in the compressor, preventing proper heat dissipation during operation, which may ultimately result in cylinder scoring. Conversely, too much oil reduces heat transfer efficiency, leading to insufficient cooling capacity. Excessively high pressure in the compressor can also cause damage.