GM Service Manual Online
For 1990-2009 cars only

Handling Air Conditioning Compressor Oil for Chevrolet Chevy P52 RV/Van Chassis 1997

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.