Try to change it before 10,000km. The oil company set the 10,000km guideline is refering to their test on the car that keep running at long distance till it reached 10,000km.
As for our daily usage, stop-and-go during heavy traffic will shorten the quality lifespan of the oil..
As for our daily usage, stop-and-go during heavy traffic will shorten the quality lifespan of the oil..