Another good thing to have: Factory service manuals. I say, FACTORY! Nothing less. They are a bit expensive, but one saved trip to a shop in labor will pay for them easily and you'll have them forever. Check out www.books4cars.com.
'86 420SE Euro
904 Midnight Blue, Gray Velour
Dad bought it new, now I own it.
"A Mercedes-Benz is like a fine wine, it only gets better with age."