LEMON Manuals: Even more car manuals for everyone
Home >> Isuzu >> 1994 >> Trooper S, Standard >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> General Servicing >> A/C System General Servicing >> USING R-12 & R-134a REFRIGERANT >> Refrigerant Oils

Refrigerant Oils

NOTE: Use ONLY the specified oil for the appropriate system or A/C compressor. Always check the underhood A/C specification label or A/C compressor label before adding refrigerant oil to A/C compressor/system. See Figure .

Refrigerant R-12 based systems use mineral oil, while R-134a systems use synthetic/Polyalkylene Glycol (PAG) oils. Using a mineral oil based lubricant with R-134a will result in A/C compressor failure due to lack of proper lubrication. The following R-134a refrigerant oils are currently available for Isuzu models:

Use PAG Oil (Part No. 2-90188-300-0), PAG Oil (Part No. 2-90222-320-0), or PAG Oil (Part No. 2-90188-301-0) depending on application. Check underhood A/C specification label or A/C compressor label.

NOTE: Synthetic/PAG oils absorb moisture very rapidly, 2.3-5.6% by weight, as compared to a mineral oil absorption rate of .005% by weight.
scientia non olet · About LEMON Manuals