HEHEHE 
@ D_o_D
leave it man!!!. We are in Pakistan. We can call it whatever we want !!!. In Canada, It may be a crime to call it by someother name , but you know we have democracy here :p:p:p:p:p:p
AND
it would be much better if we concentrate on solving brother uzzy's problem rather than fighting over petty things.
@uzzy,
Yaar if its not installed, then your car is suffering from overheating problem. I hope your coolant system is not clogged. Plus you checked in the bottle. Please make sure the radiator is full as well.
A new thermostat costed me 700 rupees in Karachi. But dont get it installed yet.
There are many reasons for car overheating
one that i mentioned above. Second may be something is wrong with your water pump. Check for oil in the radiator as well. coz if there is , then head gasket is blown.