Ahh for the days when you just bought Prestone, it was green, and there were no choices. Now that we have a rainbow of antifreeze types, and those colors don't even seem to be standard anymore. What is the best type and brand of antifreeze? I'm putting in a new Cold Case aluminum Radiator in a dry freshly rebuilt motor, so the past is irrelevant. Cold Case says "use the green stuff" but as I read the descriptions on line it is clear that all green anti freeze is not the same. I'm leaning toward Zerex Original Green?