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Tool Talk Discussion Forum

Waterless Coolant

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Mike Groom

02-02-2013 19:28:16

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Has anyone used the Evans waterless coolant in there tractors or other vehicles? They claim it has a higher boiling point and doesn't cause rust deposits and lasts a lifetime without needing to be replaced.

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02-03-2013 08:01:05

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 Re: Waterless Coolant in reply to Mike Groom, 02-02-2013 19:28:16  
My Dad was in the auto parts business. He sold a ton of a similar produc back in the 50's. I put it in my Ford hot rod, and later in my 57 Chev with the PP283. It was still in there when I raded it in 63 for a new 64 Vette. What was that stuff called?

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02-03-2013 07:26:36

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 Re: Waterless Coolant in reply to Mike Groom, 02-02-2013 19:28:16  
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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02-03-2013 14:12:08

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 Re: Waterless Coolant in reply to buickanddeere, 02-03-2013 07:26:36  
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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Mike Groom

02-03-2013 07:19:06

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 Re: Waterless Coolant in reply to Mike Groom, 02-02-2013 19:28:16  
Thanks Don,I'm thinking about using it in some collector cars and my tractors,I read that Jay Leno has used it for 15 years in all his cars.

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02-03-2013 04:51:34

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 Re: Waterless Coolant in reply to Mike Groom, 02-02-2013 19:28:16  
I have had Evans coolant in my JD 4020 since 1998. Other than initial cost, I love it. It may be cheaper now, and considering that I am still using the same antifreeze for that long, overall it was not that expensive. Since it does not boil, at least under normal conditions, it does not build up as much pressure as a water based antifreeze which makes it very good for old tractors. After I had used it for around five years, I had to pull the head to replace a valve seat. The coolant passages were all clean. Of course I drained the antifreeze and put it back in after the repair. I have never had an overheating problem after switching to the Evans coolant, and of course I have never had to add water.

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