Dashboard treatment
 

The black dashboard on my 30 year old 240D is in surprisingly good shape with no cracks at all, I protected it from direct sun as much as possible.
What is the best material for keeping the dashboard in like new condition, is Armorall recommended or to be avoided? Any recommendations?

Vahe
240D 77

I'd steer clear of armor-all for the dash, it softens the plastic. It's actually slightly acidic, so it takes off the oxidized plastic on the surface.

I would use 303 Aerospace Protectant, good stuff. MUCH better than Armor All.