Just a few facts about glycols. Anti freeze is either ethelyine glycol or
propyline glycol Both perform similarly, irregardless of how I spell
;) Both increase the specific gravity of the coolant, this increases the
horsepower required to pump, but not enough to worry about. The visosity
also increases but it's effect is minimal. Water is a very poor lubricant
for seal faces, which are ussually some form of impregnated carbon and
ceramic. Glycol helps tremendously to keep these two surfaces lubricated
as the rotate against each other. It also raises the boiling point and
lowers the freezing point of coolant. It varies with percentage of glycol
to water, 50/50 is ussually the recomended mix.
Experiences with pure water depend greatly on the quality of water. I
doubt my well water with heavy mineral content would have such a happy
story.
Fred T
http://www.96trees.com
At 11:18 AM 8/15/2002 -0700, Randall Young wrote:
>Roland wrote :
>
> > Anti corrosion isn't the only reason for not using straight water, even
> > in our CA no freeze zone. These additives or Glycol based coolants also
> > provide lubrication for the water pump bearing.
>
>While I won't swear there's never been a car made this way, I've certainly
>never seen or heard of one that normally has coolant in the water pump
>bearing ... normally "water pump lubricant" refers to seal lubrication ...
>
> > BTW, Red Line's liquid
> > Water Wetter additive does not provide this lubrication.
>
>Red Line seems to claim it does ... do you have evidence to the contrary ?
>http://www.redlineoil.com/redlineoil/wwti.htm
>
>Randall
>
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