Sometimes my 300E makes a grinding noise from the rear end.. It sounds like
it is the pumpkin and it could be low on gear oil.  Any suggestions-Chuck,
MOnmouth County NJ

-I posted about my radiator a month or so ago about how I was losing
coolant; it turned out the radiator was leaking only while the car was
running.  I bought a new radiator and hoses while I was at it.