Question for you all...... I though this would be an appropriate place to ask as it pertains to electrolysis. I have a car 99' Crown Vic with a 4.6L. I *always* run my power inverter to keep my laptop running. I was wondering if anyone has tested with and without it powered up to see if the cooling system increases in stray voltage which causes electrolysis. I am thinking the inverted turns 12vdc into chopped wave 120vac. With this process I am thinking it could be causing a stray voltage. I have experianced a heater core failure at 136K (2008) and again at 151K (2011). Both were ford cores and coolant was texaco green that was fairly fresh.