I kind of have the same problem with my 73 Hornet (V8). The problem I have is that the battery is loosing its water after a few months of driving it. Last winter I put the car in its place in the garage and low and behold, the stupid battery goes dead. Not good considering that the garage is an unheated garage and we do get temps in the below zero readings at night. Anyway, I put a battery voltage meter on it and it shows that its charging at about 14 volts at 1500 RPM and about 13.1 (or so) at idle. What I did notice is that the water level is almost nil and I have to fill the water level back up with distilled water. What I cannot figure out is where is the water going??? This is the second battery that this has happened to and I find it somewhat aggravating in that it does this. There is no evidence that the battery is boiling it out (no residue on the battery itself or the bottom of the battery tray) but it got to be in that perhaps its vaporizing (although I have never seen this done before without leaving some kind of evidence in the engine bay area). The Hornet has a new voltage regulator, new cables and the such. The only thing that I haven't changed is the alternator and perhaps that is my problem. Anyone has any ideas????