Hi Michelle :)
I Expect by now you have found out on how to fill your nissan micra 1993 gearbox with oil....but just in case you havnt....on the passenger side under the bonnet if you look to the rear of the engine you"ll see a cable coming into the rear of the engine just behind it you"ll see a 10mill bolt undo that..a 19mill spanner undo the speedo cable then with a flat ended stumpy screwdriver lever it up a little,then turn anti clockwise lifting at the same time...it will come out and thats where you put your gearbox oil 2and a half liters..from a dry empty gearbox...hope this helps :) anything i might be able to help with please dont hesitate to ask ..e.mail..
Dave :)
December 2005