Tukar sajala.. kereta company. 
Those stuff is good. Recommended to use for every 20k km. Our workshop carry BG Air Intake System Cleaner which it proven and the result is not that bad. We use pressure nozzle and shot that chemical into the throttle body. But there is a big problem which most of the people don't know. Use for a long time without correct procedure, it can damage your throttle body. Make sure during you spray the chemical, don't spray on the rubber part inside the throttle body especially there is a hole in campro throttle body. It for the motorized sensor. Once you kena that part, if you unlucky then you need to replace a throttle body. For more better result, after you spray that chemical then replace your spark plug. If you using platinum or iridium spark plug, then use normal plug to do it first. Hopefully this info can help you guy as I went to BG product training before and they explained to use so well. So I assume other problem also the same. Some thing is worth to DIY while some is more worth to sent to professional workshop to do it.

just changed my wiper arm link and also the anti roll bar bushes for front. rm140 gone.. fly fly...

waja still about 45k kms... 

next is the rear door locking mechanism. sometimes work, sometimes doesn't... crap...