What in blazes is that? Browsing Sr. Bentley on a rainy Friday night, and on page A44 of volume 1 it says "Water Drain Valve in Plenum Chamber: Check and clean/replace if dirty". This is for the 7500 mile service and indicated for an S6. Any insights or is this like the non-existent pollen filter? Best regards, Mark Pollan 95.5 S6