No coolant, temperature rising a fact!! Are you certain you are loosing anti freeze? Simple fact, if you are loosing coolant you will experience overheating. You will have blown head gaskets or a complete engine failure. You must be catching it before it gets this far. The cause could be from a leaky hose connection, faulty cracked coolant hose, leaking heater core, leaking head or water gaskets, leaking water pump, hole in radiator. I may be over looking other causes, but I would check for leaks before it is too late. I have a mustang 5.0 that looses anti freeze very slowly. I can tell when it is getting low, before the warning light comes on, by the cooling fan coming on more frequently than normal. The leak is so slight I can not find it. If you are not sure you are loosing anti freeze and the temperature is rising, you may have a faulty temp. control on your cooling fan not letting it come on soon enough or at all. You do not need the cooling fan while moving or operating in cool climates.
leaking intake gasket. gm is notorious for them
A small radiator leak can cause antifreeze to leak on your 1998 Chevy Lumina when there are not any spots on the ground. A pinhole in a hose can also cause this.
No. All antifreeze types are not priced on quality but brand name. This should not have any bearing on your radiator leaking.
no you need to replace temperature sinding unit
yes, leaking coolant is what happens before the pump totally dies, then you have overheating and possible engine damage soon after the leaking.
No, but the water pump is usually located near this and that is probably what is leaking. .
Heater core has failed.
Antifreeze fumes can be toxic. Breathing them can cause health problems. If your vehicle is leaking coolant, especially from the heater core use care and repair the leak as soon as possible.
Intake manifold gaskets are leaking, intake manifold is warped.
If by water you mean engine coolant, yes. Loss of coolant, antifreeze, is a major cause of overheating.
If it is motor oil in the anti freeze, then it is either a cracked head, cracked engine block, or a head gasket blown. If it is transmission fluid in your antifreeze, then the radiator is leaking from the transmission cooler ----- although usually that would cause antifreeze to be in your transmission fluid.