Pure distilled water.
When a car is hot, keep the car running and add water to the radiator. When a car is cold, you can simply put the water into the radiator.
Water
A radiator cools the water that flows around the engine.
remove your radiator form your car then poor some hot water in radiator till water comes out nice and smooth.
The parts that are needed to fix a car radiator depends on what is wrong with the radiator. It would be best to have the radiator fixed by a professional.
There are several causes that will reduce the water level in your car radiator. The most common cause is evaporation. Engine overheating will also reduce the radiator water level.
The radiator cools the water which then goes to your engine to cool it off, as cool water enters your engine hot water from the engine enters your radiator
In a car the water pump circulates coolant through the engine and to the radiator.
It means you have a "BIG" leak. I would check the bottom of the radiator or the lower radiator hose.
Yes
to absorb heat
drink the water out of the radiator...