Never had an issue with leaking,
i green seal slime on outdrive seals when building to help sealand lubricate the outdrives to slow o ring wear, particularly when new.
Over filling with oil is normally the reason gear diffs leak... you should only fill till planetary gears/pins are covered and there is a visible bowl shape in the oil... it sometimes doesn't look enough but its the thickness of oil that gives resistance to gears rotating, not volume filling the whole unit up so the gears can't rotate... then as the force overcomes it the seals break and excess oil leaks out!
If diff oil leaks onto your gearbox gears you will get a lot of transmission drag.
if they are filled correctly and still leaking is an issue... use a smear/bead of Loctite 5910 automotive sealant around edges of casing when assembing from clean, that will stop it... but it'll need plenty of curing time...can be bought in halfords etc, used in engine building on sumps/gearboxes/diffs etc etc so more than good enough for a model car diff!
|