Overheating can warp and crack cylinder heads, head gaskets and all bearings, especially crank bearings. In extreme it will destroy the engine
Blown head gaskets, bent valves, damage to the block.
Warp and.or crack heads.
To keep the car engine from over heating
your car is over heating
If it is not actually over heating, then if the smell is outside the car, look for coolant leaks around the head and the thermostat cover. Inside the car could be a leaking heater coil.
If your car is over heating you may want to check your thermostat and replace it may solve your over heating problems
It can. You should leave the engine running while you add water to the radiator. If you add water with the engine turned off, but while the engine is overheated, you might damage the engine or the radiator.
that's because car was on too long. that's because car was on too long.
Can result in freezing in the winter and over-heating in the summer.
No, especially since the AC is used when you defrost the windows.
Water boils hotter and faster then antifreeze, more water means engine damage.
If your Pathfinder is over heating then you may have an issue with the coolant. You can try adding more coolant to ensure that your car is no longer over heating. You can also double check to make sure your blower is actually cooling your engine.
IF no damage has been done to all parties then there is nothing to do.
No they do not have to disclose all previous damage.