From our manual:
Spark plugs = LFR5AP-11 (standard), LFR4AP-11, LFR6AP-11
Spark plug gap = 1 - 1.1 mm
ATF = Nissan ATF Matic Fluid D (or DEXRON III/MERCON Auto Trans
Fluid)
You should get a car manual as it has key info. Also you might
consider getting your car serviced at least once here in SG at
Autosaver, then you can ask the mechanics ALL your questions.
The March is quite popular here in SG, and parts are fairly easy to
get.
Good luck! 