QUOTE(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=6008246
My conclusion is higher viscosity = better protection to car engine = (-)more fuel consumption =(-)engine feel heavier
lower viscosity = better performance = less fuel consumption= (-)increase engine wear and tear rate
extended info guys..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=6008246
My conclusion is higher viscosity = better protection to car engine = (-)more fuel consumption =(-)engine feel heavier
lower viscosity = better performance = less fuel consumption= (-)increase engine wear and tear rate
This post has been edited by black.sun: Jan 23 2010, 05:52 PM
Jan 23 2010, 05:52 PM

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