besides me who am not married in the church I did not have the advice of the parish priest (my son must lubricate Still the first time), if not the first who studied the tribology must be Egyptian for moving the stone blocks of pyramids. I drain my new filled with 75W140 GL5 after 4000km, oil bevelbox that came out was black probably due to molybdenum assembly grease, there were very few filings on the magnet of the drain plug. I think the drain again soon.