safrul, as for me, i change:
1) rear differential fluid, every 60,000km using 75w90 oil
2)brake fluid, every 100,000km using any dot4 fluid of any brand
3)powersteering fluid, every 100,000km using proton atf fluid dexron 3
4)atf every 60,000km using esso lt71141
5)water for radiator, every 100,000km using any coolant lah plus air paip
so far, no problems....
at the end of the day, u develop your own style on how frequent u want to change your fluid.......