My factory battery isn't quite two years old and hasn't given me any "problems" until the last few weeks. I've been cleaning battery acid crud from around the vent caps each week for the last two months - and it keeps coming back! I even went to Pep Boys to have them drop it in the charge test gizmo. Suprisingly, they said there didn't seem to be anything wrong with it. Good and strong. So, why all of a sudden the constant crud? One guy mentioned that it can be from overheating or overcharging. Anyone have this problem before?