Yesterday, I noticed something. I did not use my car at all. When I came back from work, I just wanted to see if the water level in the radiator has reduced. It reduced indeed. I poured about half a big bottle of water. Then, my father saw that there was a leakage. Water kept dripping but not from where the radiator is. It was from further in. Somewhere near the engine. My father said could be some hoses or the water pump. The temperature goes up only after driving. After filing up water, I let the engine run but temperature was normal. Then, I took it for a drive. The moment i stopped at a traffic light, it shot up. I turned off the engine at the traffic light and. But it was green so fast, so i started the engine again and drove home since i was like 500meters from home. Any idea why this happens? I need to know just to make sure I dont get played out by the mechanics. I may go check later. Another question, does radiator coolants help? I mean if there are no leakages, will it be different if I use coolants compared to just water? I bought one yesterday but it says anti freeze coolant? Can I use it?