Well you can wither do this or have a mechanic do it, you add a florescent dye added to the coolant, then you need a black light to find the leak which will glow under the light. Sometimes these leaks are at the back of the intake manifold which is hard to find. Try using a mirror and looking at the rear of the engine against the firewall and see if it looks wet, feels wet. I had to replace an intake manifold gasket for a coolant leak and that is where it was and very hard to find.
Maybe it's not the radiator. Maybe it is one of the radiator hoses that is leaking. Or possibly the radiator cap or a level sensor.
Check radiator hose, leaking water pump, look for hole in radiator, leaking coolant bottle or leaking seals.
The transmission cooler (possibly part of the radiator) has failed.
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.
Having to add collant & coolant leaking from the hose.
Antifreeze is green in color and is leaking from your radiator .
Several possibilities: 1. Radiator is leaking. 2. Coolant hose is leaking. 3. Hose clamp is loose. 3. Seal on water pump is leaking. 4. Overflow container is leaking. 5. Radiator clamp is loose or bad. Two highest possibilities: Radiator or hose is leaking.
possibly the radiator cap is not holding pressure, try replacing it
Leaking radiator? Leaking or loose radiator hose?
It could be the radiator, the hoses, a leaking coolant tank or the water pump.
maybe your radiator is broken and you need to get a new one or just get a reparation if the radiator starts leaking when is in use it may be leaking because of the pressure of the water.
Some typical radiator repair jobs are leaking hoses, leaking radiators or loose connections.