I have a 92 190E 2.6. Does any one know how to tell if your rear differential is limited slip? Is there a letter on number in the VIN that will tell me?

Colored tag by the refill (upper) plug instructing you to use the MB Limeted Slip diff lube. You can also jack up the rear of the car and see if you spin the wheel on one side if the other side A)goes the same direction (limited slip) or B) The opposite direction ("open" or non-limited slip)

Gilly