Persona Elegance B Line, 2 Years 4 or 5 months

Was using Petronas or Shell Helix of 10w-40 regularly from sec13 proton service centre.

This is my first time using oil others than from service centre

02/10/2012 - COD with Jason at BHP, TTDI.
06/10/2012 - Oil change at sec13 proton servis centre.
20/10/2012 - After driving about 500KM++, I can say the engine is much more smoother and a bit quieter when revving for acceleration(if u know campro engine). The most obvious is gear change is a lot smoother and less noticeable (exclude low gear changing).