Correct oil for 1995 nissan micra ?

I have a 1995 nissan micra cvt auto,I would like to
know what is the correct oil to use for the cvt transmission and how much oil does it take to fill, it drives good but it's difficult to select D or R from the N
position when the the engine is running, but the selecter moves freely when engine is off, hoping it's a oil problem . Can anyone shed some light?