问题:我有重引擎冷却漏水

I have a engine coolant leak but I'm not sure where the leak is coming from 1 gallon of water only last about 30 minutes I'm assuming the leak is high on the engine Because by the time it gets to the undercarriage it's dripping from 5 to 6 different places and I'm not sure where the leak is coming from I've replace the heater hoses and tried many different coolant system sealants blown head gasket sealants cracked block sealant and nothing seems to be working someone told me today that it may be my water pump but I'm not completely sure and was wondering what an expert's opinion was 1 gallon of water only last about 30 minutes and then I have to add more the temperature gauge fluctuates and goes from normal too hot and then back to normal but just recently it has been stuck on hot it also dies at stop lights and stop signs after I drove it 4 at least 20 minutes

我的车有181,000里程
我的车自动传输