[Crankster]

I've read that a lot on the H.A.M.B. about the glycol antifreeze, "some" percentage is a whole lot better than none, that even fairly weak concentrations as a practical matter will provide protection from cracked blocks in below zero temperatures.

I have to wonder though, how the water pump or other other internals might handle slush or near icing? If it's all the same I only ever run a 50/50 solution and don't lose any sleep that way. The freeze protection never expires is my understanding, the anti-corrosion additives however get used up and it needs to be flushed and renewed for that reason. I like to be frugal, but whenever I get cheap, it ends up costing me money. There's a difference.