I always put a thin splash of graphite with molybendum (sp?) on the metal to metal gears as it quiets them a bit and I hopes make them wear easier.
This is similar, the one I use is in a red tube though a dry lube, guys here use honda 21 moly/graphite. Im not all pro lol Im sure a search in here would find the honda stuff or something better.
http://www3.towerhobbies.com/cgi-bin...?&I=LXKR89&P=7