Sent my car to the service centre after detecting oil leak stains on the floor of the car porch. At the service centre, it was found that the rocker cover gasket was the cause of the oil leak. Replaced the part which costs RM80+.
Thought this was the only part that needs to be replaced but was told that the oil cooler hose also needs replacement. There was a recall for this oil cooler hose previously whereby it was replaced at about 40,000 km mileage. My car is now 80,000+ km mileage and the oil cooler hose was said to be "hard" and almost brittle state, so it needed to be replaced for safety purposes or else all the oil will leak out where the hose burst. No choice since this is for safety, so the hose was replaced. Cost of replacement is about RM140+.
So, it appears that the life span of the oil cooler hose is about 40,000 km only, and the cost of the part is RM140. Just for everyone's information.
Apart from the replacements above, did the ECU reflashing (recall), and OCH replacement, not sure what is this OCH though. Brake pads were checked and found to be still in good condition, so they were not replaced. The brake pads are still original pads and they have lasted more than 80,000 km now.
It should be free within the car warranty.