I have a 92 civic hatch , with the 1.5 16valve enngine (D15) . My wife called me about 2 months ago while she was driving to work and told me the car was spewing steam and overheating . I went out and checked and found the coolant was very low . I topped it up and bled it out throught the bleeder screw . She drove it to work and then home after . It was fine until she was almost home , and the temp gauge went high . I replaced the thermostat and rad cap . Ever since I have had to add coolant on an ever increasing rate . I can't find any signs of a leak , there is no white smoke from the tail pipe , there is no cross-contamination , and I get no bubbles in the cooling system while the car is running . I get a lot of steam coming from the overflow tank , and the rad is almost empty after driving for 20-30 mins of city driving . I have assumed it was just the headgasket , but now I'm not sure . Any thoughts or suggestions?