I have a 1981 300TD wagon.  I filled it up last night, and for the
first time I topped it off.  When I came out later to drive it, it
looked like fuel was leaking from the tank.  I have heard that some of
the older mercedes have what amount to a hole in the top of the fuel
tank to alleviate any overfilling.  Does anyone know if that is true?
Please respond to my email.  Thanks!