Evans Waterless Coolant

[Groundes-Peace]

Does anyone have experience using this product in a B18 or B20 engine?

[Laird Scooby]

Originally Posted by Groundes-Peace

Does anyone have experience using this product in a B18 or B20 engine?

I've not used it but i know of someone who tried it in a 940 (development of the original red block B18/20) and had problems with it.

General consensus from others that have used it (on other fora) is stick with what's recommended, if it's over-pressurising find the problem and fix it, don't bodge it with this stuff and a breather hole in the rad cap.

I'm sure there will be people saying they had problems and used this and problems all gone, that may be true but it also begs the question why not fix the problems and use the correct stuff.

[Groundes-Peace]

Although the lack of pressure at operating temperatures can be of benefit, I think one of the key benefits is the reduction in corrosion and oxidisation.
Anyone got any further comments?

[c1800]

I’ve read stories about overheating with waterless coolant.

Here’s a decent article, you may have seen.

https://greengarageblog.org/17-water...-pros-and-cons

[Laird Scooby]

Originally Posted by Groundes-Peace

Although the lack of pressure at operating temperatures can be of benefit, I think one of the key benefits is the reduction in corrosion and oxidisation.
Anyone got any further comments?

Use the correct ethylne glycol antifreeze all year round and that also minimses corrosion and oxidisation.

[142 Guy]

Originally Posted by Groundes-Peace

Although the lack of pressure at operating temperatures can be of benefit, I think one of the key benefits is the reduction in corrosion and oxidisation.
Anyone got any further comments?

The reduction in cooling system pressure only occurs if you don't exceed the elevated boiling point of the waterless coolant. With the elevated boiling point the onset of nucleate boiling on the head and block surfaces which is critical to good heat transfer from the metal to the coolant will be elevated. As a result, the engine block and head will likely run hotter than they will with a conventional coolant mix. Get it hot enough and it will boil eventually unless you seize because you have a lubrication failure because of the elevated oil temperatures.

You can get exactly the same effect if you run pure ethylene glycol which has a boiling point of 197 C (386 F) which is suspiciously close to the claimed boiling point of 375 F for the Evans coolant. Just about every container of ethylene glycol coolant that I have come across has recommendations against running high concentrations of ethylene glycol specifically because it elevates the temperature at which nucleate boiling occurs and causes the engine to run hotter.

If you run a 50-60% mix of the appropriate coolant mixed with demineralized water and change it at the time intervals suggested by the supplier corrosion is not going to be a material issue.

[Clan]

Originally Posted by Groundes-Peace

Does anyone have experience using this product in a B18 or B20 engine?

There is Nothing better than Volvo coolant available at your dealer , cheaper than Halfords and never needs changing !

[Derek UK]

Forget it. If you are Jay Leno who gets it for free for his old cars that don't have a water pump and which rely on a hit and miss thermo syphon cooling system you might have a case. The normal system works perfectly. Modern anti freeze is much better now than it was back in the day so why reinvent the wheel.

[Triple-S]

Never ever had a problem with ordinary Halfords anti-freeze in my pre-war syphon-system Ford 1172cc side-valve Ford which doesn't have a water pump. Our family car for two decades, its still in use by the buyer several years later, and always lives outside and for several winters was the only car in our road to get out (due those skinny cross-ply tyres and low-revving engine).

P

[Groundes-Peace]

Many thanks for so many informative responses.
(These include the reference to Jay Leno.)
I will stick with conventional anti-freeze!