from 7-10 from my digital copy of the 02 manual under the 30 000 Mile section

For supercharged engines only: Check the supercharger oil level and add the
proper supercharger oil as needed (or every 36 months, whichever occurs
first). See “Recommended Fluids and Lubricants” in this section.
An Emission Control Service. (See footnote ).
They say check and top up... but this is like gear oil, its gotta be changed.