On Dec 13, 11:25*am, "Dave Plowman (News)"
wrote:
In article
,
* *thirty-six wrote:

*Filling with molybdenum
disulphide loaded oil could quite easily leave you with a box that is
'lubricated' *but despite that it is totally unusable.
How would it become unusable, drag racers have been using MoS2 for
years, with success, *with drained gearboxes?

It could effect the operation of the synchromesh. Which relies on friction.