How Often Should Car Compressor Oil Be Changed?

[PiperMarie]

It is generally recommended to change the car air conditioning compressor oil once a year. Detailed explanation is as follows: Air conditioning compressor: The compressor acts as the engine of the air conditioning system, compressing and driving the refrigerant (coolant) to circulate. Replacing components like the compressor, condenser, or evaporator is time-consuming and costly. The refrigerant and compressor oil in a car's air conditioning system should be inspected and replaced annually to ensure proper functioning of the system and prolong the service life of key components such as the compressor. Precautions for oil replenishment: When adding refrigerant to the air conditioning system, failing to replenish compressor oil or adding excessive compressor oil can cause serious issues. Insufficient oil leads to inadequate lubrication of the compressor, preventing proper heat dissipation during operation, which in severe cases can cause cylinder scoring. Excessive oil reduces heat transfer efficiency, resulting in insufficient cooling capacity of the air conditioning system. High pressure in the compressor can also lead to compressor damage.