It cools down the lubricant. and lubricates the engine piston to stop it from snapping.
Not all cars do (eg electric cars). However if the car is powered by a combustion engine then the engine produces heat and this heat must be dissipated or the engine will overheat and cease. This is why combustion engine powered vehicles need a cooling system/radiator.
If your radiator isnt leaking and car is having a over heating problem and coolant spewing out. Chances are your thermostat needs replaced. possible the radiator needs to be flushed. But more likley its thermostat
It cools down the lubricant. and lubricates the engine piston to stop it from snapping.
Whenever it needs it.
Yes, a car needs a radiator to run because it stores the coolant for the engine and dispenses it when needed. So, if it didn't have one the car would overheat and not be able to move :)
Well a possibility is a problem with the radiator, either it needs to be fixed, replaced, or has no radiator fluid in it to cool the engine.
The radiator will need to be replaced. Sometimes, it may seem that the radiator itself is leaking but it could be the radiator "hose" that is leaking. In this case, the radiator hose needs to be replaced and clamped tightly.
You need to go get your car looked at by an auto repairman if you have a crack in your auto radiator. They can tell you if it needs replaced or just fixed.
== == The car is about 16 years old, it needs a complete rad and heater core flush, to get the junk out of it, and make the system operate better, and more effectively. A professional radiator shop can do that for you.
Either the radiator is blocked, or the thermostat is stuck closed, or the water pump has failed.or it just needs water.
We always renew the antifreeze in our car before winter.
question- what was the car without a radiator? well it's probly a car without a stinking radiator,,,