I have 1996 chevy blazer 2dr and it is leaking anti-freeze it ran hot on me once and I check the engine coolant tank it was empty I added anti-freeze and water it hadn't rany hot since but now it has a slow leak and I can't tell where from when I took the radiator cap off it's filled to the top but the tank is half empty what is the problem:confused:

If it is leaking you should be able to pinpoint the leak in either the hose or the radiator itself. If you cannot determine where the leak is I suggest you have a mechanic put on a pressure tester for the system and that will show the leak.

It could be a number of things: a gasket, a hose, a water pump. You'll need to have it pressure-tested to locate the leak.