Drive system belt.A/C system oil balance

Which oil is used in A/C compressor?

Which oil is used in A/C compressor?

Automotive air conditioning systems use different type of oils and the specific type of oil will vary depending on the type of refrigerant, the type of ac temperature range system and ac compressor. Hybrid and electric vehicle compressors use different types of oil compared to conventional engine system compressors.

WHAT TYPE OF OIL ACCORDING TO TYPE OF REFRIGERANT R-12 R-1234YF AND R-134a

The refrigerant oil required by the auto ac system depends on a number of factors ,but it is primarily dictated by the type of refrigerant used in the system.R-12 car systems used a mineral oil. Mineral oil mixes well with R-12  without breaking down and losing its lubrication characteristics. Mineral oil however cannot be used  to lubricate ac systems with R-134a refrigerant.R-134 systems require a different synthetic oil, polyalkylene glycol (PAG).There are different blends of PAG and POE oil; always use the recommended by the vehicle manufacturer or the replacement part manufacturer.

The lubricant oil used in automotive air-conditioning systems is a non-foaming, sulfur free grade specially formulated for use in cars a/c systems. New refrigerants like R-1234yf might use PAG 46 and are backwards compatible for use with R-134a systems, but the R-134a old PAG 46 oils are not forward compatible with R-1234yf systems.

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