bought satria 2002, fuel injected, from 2nd hand car owner. I plan to go outstation to cameron from KL soon, so i need a fulls service to the car. I dunno much about car as this is my first car. What i did was i filled up the battery with battery water. I check the radiator water level it seems to contain some greenish stuff which i believe is coolant, it is attaching to the yellow metal cap which says do not open while its hot.

i do not plan to go to Authorised Servis Center mainly...