Bit the bullet and changed everything. No noticeable wear after 70,000 klm since last change but has been over 7 years. Serpentine tensioner wasn't done before and had miniscule movement at pulley. Car will be over 20 years old before due again! Could not budge the alternator pulley, snapped 2 special tools. Will wait till alternator dies and replace as one.

https://www.vwwatercooled.coFuture proof 2011 CFFB TDI-pxl_20250221_234947449-jpgm.au/forums/attachment.php?attachmentid=56317&d=1740183194&thu mb=1&stc=1