Have any of you dealt with this before or know anything about it?
Seems to me that some vehicles are more susceptible to it than others and can suffer very serious problems because of it. From the research I've done it sounds like a lack of proper grounding and coolant/water ratios are the biggest causes.
My machinist (who is ISO certified and used by the military) says in the worst cases electrolisys will bore pinholes through cylinder liners half an inch thick in as little as a couple weeks.

Over the last couple of years I've been replacing quite a few engines for having porous cylinders, burning coolant, on cylinders that could ever only see coolant from block problems or cracked heads. Often after removing heads and having my machinist magnaflux and/or pressure test them.
Are my coolant electrolisys theories right or wrong? Can you offer up some enlightenment on the subject?