BenzWorld Junior Member
Date registered: Dec 2009
Vehicle: 87 190e automatic
Location: Western NY
Mentioned: 0 Post(s)
Quoted: 2 Post(s)
My fill plug (higher up the diff) is on the drivers side and drain plug (at bottom of diff) is on the passenger side. That is how it seems to be in all the pics on the internet as well.
In regards to filling the car level or jacked, it seems that it should not matter as long as the the car is down and level before the fill plug is reinserted.
The reasoning is that if the car is jacked allowing the diff to be overfilled, then the car is lowered to be level, the excess oil should drain out the fill hole. (this is all operating under the idea that the fill plug is the level indicator for the differential oil. If it is, then the car can not be overfilled theoretically, because it will drain out the fill plug when the car is level)