If you are really serious about the leather (I am) the very best is something called Leatherique.
I have used it for at least 20-25 years on all my cars. I almost always get leather.
It is not cheap but it works well.
I was introduced to it by Jag collector in Anaheim Calif about 1977-78 I think.
He had just started using it. Prior to that he used something called Connelly Hyde Food. I think Connelly's is still considered to be among the very best also.
I use what is called "restorer" about twice a year.
I think it has softened the Nissan leather "slightly".
But as noted, my Mustangs, Chryslers, etc all had a better quality leather than Nissan. And of course my 93 Jag was far superior.
I also have their cleaner and use that maybe once a month or after I get out of the Murano with dirty hands etc.
It's not cheap. But it lasts a long time, smells good and is the best in the world IMO.
Look here
http://www.leatherique.com/
Homer
I'm sure that regualar leather cleaners and conditioners are suffucient.
I jst never let a $10 bill (or so) keep me from buying the best. That's just me
