The nearside mirror has started 'groaning' when electrically folded. Took a close look and there's the merest hint of a graze on it that wasn't there a few days ago. I assume somebody's caught it with their own mirror in the supermarket car park.
Spraying WD40 behind the mirror quietened it back to normal - but of course it all blew out along the side of the car after a run on the motorway.
Anything else I could use? A silicone grease or spray wax of some sort? It needs to have some 'body' to keep itself in place but sprayable through a WD40-type tube to get behind the mirror and down into the mechanism.
(Spraying into the swivel joint between the mirror and base didn't make any difference at all!)