HKKA, try Synergyn Racing Oil if youre locate in Hong Kong. Im currently using it and make great difference in performance. 20km/h more on the same road compared with oil provided by dealer here. Its SAE-0W20 but the engine run very smooth and no noise at all. Till now, I ran for 10000km but still no performance degrade. For the oil temperature, it will keep at around 100 degree and hardly increase even under hard race.