QUOTE(4te @ Jan 23 2010, 06:28 PM)
I am using Shell Ron95, thrid tanks dy and not very good result ... i am going to try Mobil for another next 3 tanks and will update you guys accordingly.
BTW, i think its good to record down the average speed also as it reflects the traffic condition

I am also using Shell Ron95 due to i am using Shell Credit card(2.5% rebate) and it is convennient to me compare to Caltex/BHP/Esso but i feel that it is less "power" compare to my first tank, BHP95 which fueled by SA in my first tant.
4te, appreciate that if u can update ur fuel stat for diff brand.
Added on January 23, 2010, 7:31 pmQUOTE(miet @ Jan 23 2010, 05:03 PM)
Searched Castrol website, all their top range or Fully Synthetic oil are 40.
My wild guess is viscosity 30 may not suitable for Malaysia hot Climate. In Korea maybe yes bcos of thier cold climate.
So, 40 should be suitable for use.
http://www.castrol.com/castrol/multiplepro...ntentId=6008246My conclusion is higher viscosity = better protection to car engine
lower viscosity = better performance
i serviced mine at Kia Motors authorized SC. They also service other luxury cars. In this centre they only using Shell. And to my car, they using Shell Helix Ultra which is 40...
This post has been edited by ssek76: Jan 23 2010, 07:31 PM