Not a good idea to add water. You should add an engine coolant available from any auto parts store. You should never remove the radiator cap when engine is hot! Wait until the engine has cooled down then remove cap. Fill radiator with engine coolant, replace cap and then refill coolant reservoir. That procedure will get you to a garage where they will find out why it overheated in the first place.
defiantly off because it will keep heating up but it wouldn't be a good idea to put water because it was made with oil so... i would try it
Only until it overheats.
check the water level, if its okay then you probably need a thermostat
Each car overheats at a different temperature you need to look up and find out on the internet
YES
Be sure the thermostat is not installed backwards.
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.
Thermostat regulator is malfunctioning, water pump pulley could be bad, gas bubble in radiator hose.
Shorts out and overheats or has too much resistance for some other reason and overheats.
Low coolant? Cooling fans not working? Water pump not circulating coolant? Radiator plugged or restricted?
Car overheats, your heat in your car stops working
Poor coolant circulation in the cooling system.