My car starting over heating and i have put about one bottle of coolant and about five bottls of water its not leaking but the coolant level is still reading low and i dont know what to do and the coolant when it overheats comes back out the coolant jar???

It has to be leaking some where if not on the outside then you have a bad head or intake gasket and the water is getting burned in the motor. Check all under the car for a leak if none found then the only place it can be going is in the motor. Do you notice a white smoke coming from your exhaust, if so that is water and coolant being burned. The coolant jar your refering too is the overflow and that is normal when it overheats. Used to be when it overheated it just shot steam out of the radiator cap, nowdays all that is captured and re used. Look around the water pump for an obvious signs of any leakage. might just be a bad pump and the engine is heating up and overflowing