i need more proof to my g/f's dad that her head qasket needs to be changed i have already changed the radiator both upper and lower hoses the thermostat and temp sensor but he thinks i put in the wrong thermostat but i put in a fail safe and about every 3-4 days i have to put water in anti-freez in her car so i just need to proove to him that her head hasket needs to be changed she also has a 5th gen accord with i/h/e so please let me know ASAP