GM Service Manual Online
For 1990-2009 cars only

Handling Air Conditioning Compressor Oil for Chevrolet Chevy P12 Chassis 1998

Unlike engine oil, no cleaning agent is added to compressor oil. Even if the compressor runs for a very long time, the oil never becomes cloudy or dirty-looking as long as there is nothing wrong with the compressor or its method of use. Inspect the extracted oil for the following conditions:

    • Presence of moisture, dust, metal shavings, etc.
    • Change to a varnish color