What type of systems commonly use PAG lubricants?

PAG (Polyalkylene Glycol) lubricants are primarily used in automotive air conditioning systems because they have properties that are well-suited to the unique demands of these systems. These lubricants provide excellent lubrication, are compatible with R134a and R1234yf refrigerants commonly found in modern automotive air conditioning systems, and offer good thermal stability, low volatility, and resistance to water.

In automotive applications, the PAG lubricants help in maintaining compressor performance and efficiency while also protecting against wear and tear over time. Their ability to mix with the refrigerant improves the overall lubrication of the system, which is essential in keeping the air conditioning functioning optimally under various operating conditions.

While other systems like refrigeration units, commercial chillers, and residential HVAC systems may use different types of lubricants, such as mineral oils or ester oils, due to their specific operational and refrigerant requirements, PAG lubricants are distinctively tailored for use in automotive air conditioning systems. This specialized application highlights the critical role of selecting the right lubricant in maintaining system efficiency and longevity.