Noob,
I had temp problems recently too. At first, I saw a bit of water leak from below the timing belts. Then I just filled up the water tank regularly. This morning, I didn't realize that the water had all dripped out and I drove only for 5 minutes, the temp shot to nearly the red zone. Stopped below a tree and stopped the engine. When safe, I checked the radiator and it was dried. So was the water tank box. Luckily, I had 2 1.5L bottles of tap water (I would guess I'm going to need it hahaha) and filled it back up. Drove another 10 minutes to my office and filled up the bottles again. hahahaha
I notice something. When I stop my engine, the water seems to come out more. Maybe it's depressurising or finding ways to release steam or what ever la, so the water comes out more.
Then I went to Eneos and bought the ABRO LIQUID HEAVY DUTY STOP LEAK ( http://www.abro.com/CoolingSystem%20.htm ) fluid. This also works on water pump leaks, which I suspect is what I'm experiencing. Drove home in 15 minutes. Stopped engine and waited for about 10 minutes for engine to cool down a little. Then went to check under engine. Water leak again and it wasn't just a few drops. Enough water came out to flow until out of the car, under the door. Can see the water flow. Applied the ABRO liquid and let the car run for about 10 minutes or so. No more water leaks. Will see how it fares tomorrow.