a little bit of glycol or an anti-corrosion/water pump lubricant like "Water Wetter" (which is useless when used with normal antifreeze concentration).

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Obviously, a glycol/water combination with water pump lubricant and aditives will corrode less and cool better than water alone.

I do not dispute that water wetter is useless with normal mixtures, but it would be useful to know why.

Water wetter, of course, does not say that it is useless to what must be most of the people most of the time, I imagine for obvious reasons.

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Semibodacious Transmogrifications a Specialty

1990 300D 2.5 Turbo sedan 171K (Rudolf)
1985 300D Turbo TD Wagon 219K (Remuda)

"Time flies like and arrow, yet fruit flies like a banana"
---Marx (Groucho)