Engine Coolant Quesiton

Does anyone have any experience with the PEAK Global LifeTime antifreeze? Everything you read says do not mix G12 with anything other than a small amount of distilled water. PEAK Global LifeTime antifreeze claims you can. I am not stupid enough to believe everything I read, but why would a company as large as Old World Industries make this claim if it was not true. I would think the liability issues would cause tremdous problems for them.