Engine oil suggestion for Toyota Vitz 1L, 2010

[Xavierl]

After trying both 0w and A+ versions of Zic, I went with the 10w30 Toyota Japanese Tin can oil. I have been using it for the past two years now without any complaints. I enjoy the drive of the car.

How is the fuel efficiency compared to ZIC? And where did you buy it from? I am also having trouble locating dealers that sell original oils. Also, isn't 10W a bit too thick for a Vitz engine?