The above post should read "every 100K or so", gets a little pricey doing the job every 100 miles or so
. Would also replace the tensioner at the same time, $50 insurance.
Check the books for the last service to the self leveling system (SLS). Might be time for a fluid flush and filter replacement.
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.