Oil Specification

WARNING: This page is about a different car, the 2005 Kia Spectra5, 2005 Kia Spectra, and 2004 Kia Spectra. However, it is still accessible from the selected car via links, so may be relevant.

The HFC-134a system requires a synthetic (PAG) compressor oil whereas the R-12 system requires mineral compressor oil. The two oils must never be mixed.
Compressor (PAG) oil varies according to compressor model. Be sure to use oil specified for the model of compressor.