Practice question
PAG oil and POE oil are both used with R-134a systems. A key reason a manufacturer may specify POE oil is:
- It increases refrigerant pressure
- It is cheaper than PAG
- It is more compatible with certain compressor designs and hybrid/electric A/C systems
- It eliminates the need for a receiver-drier
Answer: C — It is more compatible with certain compressor designs and hybrid/electric A/C systems
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