ASE H7 HVAC (Transit Bus) Practice Questions - ASE H7 - Heating, Ventilation & Air Conditioning (Transit Bus) Certification Exam

Which lubricant is correct for an R-134a transit-bus A/C compressor specified for PAG oil?

Polyalkylene glycol (PAG) oil of the OEM-specified viscosity Mineral oil Brake fluid SAE 30 engine oil

Correct Answer:

Polyalkylene glycol (PAG) oil of the OEM-specified viscosity

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