On most modern cars there is an expansion tank normally by the side of the radiator. There is normally a screw cap. Please be careful if the engine is worm, because if you remove the cap the water will boil and come out with an unexpected foarce.
The bigger your car, the more coolant you need to put in. The bigger your engine and car, the more coolant you need
No , when the engine is cool
put coolant into my over flow car was running hot and the coolant erupted like a volcano on the side of the over flow
When the car is cold the thermostat is closed. When the thermostat is closed the coolant does not circulate or get in to the engine block.
In the coolant reservoir when the engine is cool.
Clean water should be used and mixed with the proper coolant for your car.
After coolant is added run vehicle to normal operating temperature and re-check coolant level
It is possible to put water only in the reservoir for coolant on a car. However, this should only be a temporary fix until it can be repaired by a mechanic.
If your car is leaking coolant get it fixed and put in the recomended coolant for your car. You should locate that info in the manual, also putting water in the winter is a bad idea since the water could freeze causing engine damage. I supposed you might be able to run it for a while in the summer with just water but get the leak fixed and put in the recomended antifreeze/coolant
try taking out the thermostat and have you put to much oil and coolant in the radiator
It could end up popping the reservoir cover off and "burping" the excess coolant out.
yes, because once the coolant started to steam it would seep out.