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| Tool Talk Discussion Forum |
Topic: Re: Waterless Coolant
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| buickanddeere
02-03-2013 07:26:36
209.240.121.101
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It's propylene glycol .
With no tap or ditch water, there is no scale.
Mention using demineralized or distilled in a cooling system mix. 99% of people will give confused looks and wonder why.
Propylene glycol does not ruin bottom end bearings if a leak occurrs.
Propylene glycol does not poison animals if they drink it.
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| MarkB_MI
02-03-2013 14:12:08
75.198.70.209
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Re: Waterless Coolant in reply to buickanddeere, 02-03-2013 07:26:36
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| | Actually, according to the MSDS it's about 70 percent ethylene glycol and the remainder is propylene glycol and corrosion inhibitors. So it's still highly toxic. My guess is they added just enough propylene glycol to get the freezing point down to an acceptable level. Straight ethylene glycol freezes at around +9F/-13C. The problem I see with running straight glycol coolant is that both propylene and ethylene glycol have a lower specific heat than water. Cooling systems are designed to use a glycol/water mix, and aren't going to work as well with straight glycol. This may not matter most of the time, but could be a serious issue under severe conditions.
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