I stumbled across this product:
http://www.evanscoolants.com.au

It's a waterless engine radiator/coolant liquid supposedly with a higher boiling point than water (obviously water is at 100degC and higher with some additives), but this stuff supposedly boils approx 190degrees C.

Has anyone had experience with this stuff? Theoretically it sounds pretty good, but it's expensive. Although it lasts the life of the engine supposedly.

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1972 Datsun 1600, S14 SR20DET Engineered (204rwkW @ 17psi.)
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#SR20Datsun @SR20Datsun

Did a bit of reading:

The Evans stuff is a fair bit more viscous than water.
Water is a better heat exchanger than Propylene Glycol, but causes corrosion.
You don't have to run a pressurised system with the Evans stuff.
The Evans stuff has greater headroom until it boils


The way water transfers maximum energy is by converting from a liquid to a gas (boiling). The thermal transfer capacity of steam is far less than when it is a liquid, so once it's steam, it has to condense back. Bad if it's a hot spot in the engine...

At the end of the day Nissan's engineers used a 50/50 mix (or there abouts) of ethylene glycol and water (distilled). The system (say an SR20DET) would have been designed with this in mind and would have been life tested.

If you engine is running at above 120deg then I'd say it doesn't matter if your coolant can cope with it, the engine probably can't as it's not designed for this kind of temperature...

Does anyone have real world experience? I'm interested in some feedback!

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1972 Datsun 1600, S14 SR20DET Engineered (204rwkW @ 17psi.)
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#SR20Datsun @SR20Datsun

Bloke i have known for many years, is very cluey on lots of car stuff, mainly old school, is the Qld Distributor for this product, he's trying to talk me into sing it in the race cars.
Recently a good mate, who owns the ex Fury/Scott Bluebird Turbo Group C touring car, did a full flush and is now sing the Evans stuff, he has said the temps are stable, and has had no issue.
Based on that, and other testimony, i will be putting it into the ex Fury FJ24 engined Dato 120Y

I will NOT use ethylene glycol based products as they cause engines to run hotter.
I have used both Redline Water Wetter, and Penrite SIN coolant, both are same product, and both are very good under harsh race conditions.

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Yep, i race a Datsun, and I drive a truck, sometimes I get confused, and then the truck goes fast, and the Datsun gets a lot of boxes shoved into it. AWW GEE

ethyl based coolants do not make car run hotter. what proof do you have ? with evans coolant , youd be screwed if you had a leak, you cant just add water to top up.
Evans works best when there is less than 3% water in the cooling system
http://www.3si.org/forum/f11/dumping-ev ... up-206021/

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past ride : l20b block / z24 crank / z18 head efi / t3 turbo / digi 1 / v6 commodore throttle body / 158kw @rear

Never had problems with Genuine Nissan long life coolant, around 94% ethylene glycol.
When I was working with Nissan network back in the 70s in the N.T. a 50/50 mix of LLC & distilled water was the go.
Towing long distances allowed coolant temps of over 110c with no problems.
I have used this in all my vehicles for 45 years. If the coolant system is set up correctly you wont have a problem.

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A little knowledge is a dangerous thing.
www.datsport.com

"R.I.P. Baz. 29 April 2022. Thank you for all your contributions to the Datsun community over the years. You will be missed." - OZDAT

When I had my 68 fairlane with a mild 351 Cleveland I struggled to keep it cool, then found water wetter, it's a great product and can mix with any coolant, made a noticeable difference and I will be putting it in the datto once it's being used more.

Nothing wrong with water wetter. I used the Motul stuff and it didn't make things worse.

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1972 Datsun 1600, S14 SR20DET Engineered (204rwkW @ 17psi.)
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#SR20Datsun @SR20Datsun