I've noticed that a couple of bits of my car seem to be undergoing some kind of chemical change.
The volume control on the radio and the door of the glove box are slightly tacky to the touch.
Having seen what happens to the drive belts of film projectors and the seals of old cameras when the rubber perishes, I'd like to stop this process before it goes any further.
What's actually going on, and what might help retard it?
Daniele