my 200 ml430 with 32k miles rear differential has a small leak. there is a little oil on the case. seems to be coming down from where the right, or passenger, axle enters the unit. i know, 'its german, it leaks', but i intend to do some towing......is this one of those deals where you put the lube in until it spills out the fill port, or do i just drain it and put 347.25 ml of gear on in? there is no noise or probem (yet).

__________________
dan