Hi folks
I am planning to replace the coolant in my 82 200 this weekend since it began to be reallly cold here.

Question is: Where is the block drain plug located on a M102 engine?

Last winter i just drained the radiator via the plastic plug and added antifreeze to top up it only got 4 or 5 liters and owners manual says
"Coolant Capacity = 8,5 liters".

This time i want to do it the "Mercedes way" accordig to the manual and drain every drop of that 8,5 liters.

thanx in advance