A33 cefiro manual mentioned min acceptable is RON95 leh....
government to introduce RON95 to replace RON92 at rm1.75 per litre, Ron97 (permium oil) will be RM2.00 per litre and subject to fluctuation as those rich guys can afford to pay for it.
I saw this part of manual says:
2L min ron91
3L min ron95
for improved vehicle performance, Nissan recommends the use of unleaded premium gasoline above 95(ron)
http://cblog.cari.com.my/attachments/2009/05/88248_200905141729281.jpg
Below is a simple guide on cleaning and PnP your TB...
My TB was due for service since it's never been properly clean before..previous ways was just to spray some cleaner to clean it so I went back early after work...