Going to try non water based coolent for 2013


tama666 said:
Is this true if only under pressure?
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Heard it before as well, yet the addition of coolant is to stop corrosion, lower freezing point and slightly raise boiling point, Any car thats been looked after changing the fluids when due doesnt need this surly?

Cant wait to see the follow up to op :2050, 70 odd yr of age driving a ek.......
 
pressure ups the boiling point of water...
so if this new stuff does not create pressure when hot, I would think this is good for the life of the cooling system? less pressure for things to go wrong. thoughts?
 
tama666 said:
pressure ups the boiling point of water...
so if this new stuff does not create pressure when hot, I would think this is good for the life of the cooling system? less pressure for things to go wrong. thoughts?
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Yeh definitly no argument just saying that water is the best liquid for dicipating heat......
Either way its not for me as its cost over potential benift, fit a coolant swirl pot to the system, Self bleading and removes hot spots/air pockets, one on a slider never looked back.:drive:
 
paulr5 said:
Yeh definitly no argument just saying that water is the best liquid for dicipating heat......
Either way its not for me as its cost over potential benift, fit a coolant swirl pot to the system, Self bleading and removes hot spots/air pockets, one on a slider never looked back.:drive:
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I see your and others point/side with water, plenty of it on this planet for sure.
One has to take a look to be sure sometimes that other solutions might be a tad better, never know what may be found, good or bad.
 
paulr5 said:
Yeh definitly no argument just saying that water is the best liquid for dicipating heat......
Either way its not for me as its cost over potential benift, fit a coolant swirl pot to the system, Self bleading and removes hot spots/air pockets, one on a slider never looked back.:drive:
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Why is water the best liquid for dicipating heat ? We know it's a good liquid for dissipating heat providing it hasn't reached it boiling point, sure. I think what you maybe thinking is something on the lines of the viscosity difference between them, with water (or regular coolant) been of a much lower viscosity (which we don't know). Obviously something with a lower viscosity will always move heat faster compared to a higher viscosity (that's why we find cooling benefits from running close to pure water compared to 50/50 mix). I think we need to dig deeper into this personally and not make any assumptions.
 
?? I'd say you know more about it than me rich, was just some conversation I picked up from somewhere, but what I'm saying you clarified simply " we find cooling benefits from running close to pure water compared to 50/50 mix"
no need "to personally dig deeper"
never liked the idea of just using water Id always add a decent bit of coolant and no where did I suggest using pure water in the coolant system.
 
I never said you did. I was using it as an example of how the cooling system is more efficient using pure water compared to a 50/50 mix of antifreeze. I'm not recommending it, I'm just stating a fact. If this 'waterless' product has a similar viscosity to pure water then it will move heat faster in comparison as it has a much higher boiling point (the system isn't pressurized).
 
I'm very interested in hearing more about this being tested out.
 
Rich777 said:
I never said you did. I was using it as an example of how the cooling system is more efficient using pure water compared to a 50/50 mix of antifreeze. I'm not recommending it, I'm just stating a fact. If this 'waterless' product has a similar viscosity to pure water then it will move heat faster in comparison as it has a much higher boiling point (the system isn't pressurized).
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Cool, just trying not to cause any confusion.
 
Rich777 said:
I never said you did. I was using it as an example of how the cooling system is more efficient using pure water compared to a 50/50 mix of antifreeze. I'm not recommending it, I'm just stating a fact. If this 'waterless' product has a similar viscosity to pure water then it will move heat faster in comparison as it has a much higher boiling point (the system isn't pressurized).
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Its simple thermo dynamics:

Yes viscosity has something to do with heat dissipation but it is more about the chemical properties of the fluid that determines heat dissipation. I.E the amount of heat energy the molecules of a fluid can absorb at any given time.

Without knowing the actual thermal conductivity coefficient of this oil based coolant we can only speculate.

All i know is engine oil thermal coefficient is around 0.12 Kw/mK

and water is 0.6 kw/mk

Almost 6x as efficient in dissipating heat from any given surface.

Lots of other things play a factor; such as difference in temperature between the engine surface and the coolant aswell. as well as reynolds numbers etc

Looking at it purely from that point of view it is obvious to see that water will dissipate heat better than any oil based fluid (even of the same viscosity)

This is why i am saying you are likely to get heat soak when compared to the water based coolant. Even with a 50 / 50 mix with ethylene glycol (antifreeze) and the slight change in viscosity that this will bring it will still be better then a full oil based cooling system.

As for the boiling point...........there is no need for an increase in boiling point of the coolant as any water based cooling system WILL NOT exceed 100 degrees C - IF IT IS WORKING PROPERLY.

The increase in boiling point does not help, in fact all it does is ensure that a higher heat capacity is maintained for longer in the engine (HEAT SOAK).

Why would you want a fluid which is worse than water at dissipating heat to hold higher levels of heat?

it just doesnt make sense to me.

But each to their own, i have no problem with anyone running Piss in their cooling system if thats what they want to do :nice:
 
I just think we need to no more about it before we jump in with a simple yes or no.

I understand what you're saying and you're right. I was just looking at it from a basic point of view. I'm going to dig deeper into it any how...
 
cant be bothered reading into it now but ive been happy with motul organic based coolant rather than regular honda and usual brands for several years,fantastic product in terms of anti corrosion qualities and heat dissipation
 
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