Most liked posts in thread: Waterless Engine Coolant

So I assume you just add more NPG to make up any losses?

 

Do you know what is in the oil you use, how about the coolant?

There is enough info on the product out there that should satisfy any skeptic on it's use, I just don't have enough experience on the MINI to satisfy me.

 

Yes, I have a very good idea of what's in my motor oil and coolant.

They're not saying what's in their stuff, there isn't enough info for me.

This skeptic is far from satisfied.

It's still snake oil, as far as I'm concerned.

Dave

 

Why don't they say what it is? They say they have a patent, I didn't see a patent number anywhere on their site, I could have missed it, the site is quite the labyrinth.

It might be great stuff, but I wouldn't use it, no matter how much anecdotal evidence they post, unless I knew what it is.

I still think it's snake oil.

Dave

 

Funny thing is, I can't seem to find anything on the Prestone site about what is in their coolant nor what patents they claim to have........

 

The label on the back of the NPG+ container states that it contains alcohol dehydrogenase enzyme inhibitor and ethylene glycol-based.

 

I'd love to give the stuff a shot. The fact that it is FAR less pressure is very appealing to me. Only downside is on my truck the thermostat is molded into the neck, so I would almost need to take the guts out of the thing rather than simply remove it.....

Am I correct that all you need to do is evacuate all existing coolant and somehow remove the thermostat?...So the water pump just continuously pumps it?...That actually sounds bad for the engine in a DD?

 

You could simply block it open....

 

:cornut: With that chemical composition, one would probably want to change to silicon hoses, yes?

Jason

 

I didn't realise that Wheeler Dealers got broadcast in the USA - that explains why they've been doing some American vehicles recently.

And what is Edd China's Mini connection, you ask? Well, before Wheeler Dealers he used to make vehicles for promotional and film work, and he made the (classic) Mini-powered Casual Lofa, that got the world record as the fastest furniture (87mph!) - believe it or not, this is UK road-legal.



Here's a short profile on Edd with some of his odd vehicles:

[ame=http://youtu.be/nKpsZOvQfu4]Edd China Profile (long).mp4 - YouTube[/ame]

 

:cornut: .............and perhaps some 'Water Wetter.'

Jason

 

Nothing works as good as water - however water freezes and is more corrosive -unless distilled and even then prolonged exposure to metals will change the ph of the water.

 

One of the reasons to add conventional antifreeze to water is to raise the boiling point. The water passages in an engine are restrictive, and localized boiling can occur. The problem is especially present around exhaust valves. That is why you see some race engines with additional cooling lines directing flow to certain areas of the cylinder head. The Evans Coolant is propylene glycol and has a 370 degree boiling point so it does not have a problem with localized boiling. It doesn’t remove heat as well as water, but if the system operates at a higher temperature the same amount of heat can be removed as water alone. The radiator operating at a higher delta T can remove the same amount of heat as water at a lower delta T. The Evans coolant can operate at a higher temperature and not require pressurization to prevent boiling, like water as well.

 

.....and you don't mix it with water. This is why it has such a long life.

 

But it won't cool as well without water in it.

Dave

 

It will cool as described.......you can't use water with this product.

 

Yes you can, it just doesn't cool as well without water.

It probably won't wreck anything, if your cooling system is larger than needed, but on, say a classic Mini with a tiny radiator, I think it could do some harm. They had marginal cooling system when they were new.

I wouldn't use it.

Dave

 

The Evans coolant is intended to be used without water. The heat transfer rate is not as good as water, but the boiling point is much higher. The amount of heat a radiator will transfer from the coolant to the air is a function of the heat transfer rate, and the temperature difference between the air and the coolant. Engineers refer to this as Delta T, or the difference in temperature between the two things you want to move heat between. The Evans Coolant will cool the engine, but the system will run at a higher temperature. Water and water with coolant systems have to be pressurized to keep from boiling. The water temperature in the water jacket of an engine is not homogeneous. The water surrounding the cylinder walls is cooler than the water around the exhaust valves. The point of the Evans Coolant is to prevent localized boiling.

 

Localized boiling is not a bad thing. Water has a very high latent heat of vaporization, this means that when it transitions from a liquid to a vapor, it absorbs a lot of energy. That vapor, or steam is then swept away by the flow of the cooling system where it re-condenses in cooler parts of the cooling system, like the radiator. The water jacket around the valves is just where you would want localized boiling, for maximum heat transfer.

Dave