Toyota avensis diesel 2014 the manual says c2 5w-30 if i put c3 5w30 castrol edge it would be better?

[Δημήτριος Κολοκοτρώνης]

C3 5w30 Castrol edge 

[robt100]

From a quick search I came up with this information:

C2: Mid SAPS-Level engine oils, C2 oils are intended for use as catalyst compatible Oil at extended Drain Intervals that are designed to be capable of using low viscosity Oils with a minimum HTHS Viscosity of 2.9 mPa*s.

C3: Again, Mid SAPS-Level, the main difference between C2 & C3 engine oils are C3’s are designed to be capable of using oils with a minimum HTHS Viscosity of 3.5 mPa*s.

So the difference is a viscosity compatability on the engine of 0.6 mPa thicker oil. So I would think C3 would be ok unless you are in a very cold climate, then C2 would most likely be better.

[Catlover]

Why not put the C2 5w-30 in ?