Basic Inspection: Lubricant: Inspection

WARNING: This page is about a different car, the 2013 Infiniti M56 and 2013 Infiniti M37. However, it is still accessible from the selected car via links, so may be relevant.

If a compressor is malfunctioning (internal noise, insufficient cooling), check the compressor oil.

COMPRESSOR OIL JUDGMENT
1. Remove the compressor. Refer to "COMPRESSOR: REMOVAL AND INSTALLATION ".
2. Sample a compressor oil and judge on the figure.
  
  Fig 1: Sample Of Compressor Oil Judgment Diagram
  Courtesy of NISSAN NORTH AMERICA, INC.
  
  Judgement result 1: Replace compressor only.
  
  Judgement result 2: Replace compressor and liquid tank.