Hi My honda city 2005 showed heat signal on motorway. I stopped the car and let it cool. Then I checked coolant, it was gone. I poured coolant and drove car to the mechanic. He did compression test and told me the results are 100, 50, 70, 80. Then I asked him to open the engine and he told me that to change complete head assembly. Engine was decreasing oil level and I don't know why coolant leaked but during the ride AC was going off again and again. Should I replace head assembly and what else might be the problem? And where can I get the good head assembly and what is the cost?
