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Evans waterless coolant

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Anyone els using this stuff?

Seen darkside advertising it a few days ago and looks decent. I've just bought 5L of prep and 7L of the coolant and will be using it once the cylinder head is back from getting it's work done with the new head gasket.

Use it in a classic! Good stuff imo

Might have a good additive package, but there are no miracles. You can run even G12 (original, plus, plusplus) at 100% concentration. The only (significant) price will be reduced heat capacity of the coolant, I.e. it will take less heat out of the engine at every pass through it, but it will have grossly increased boiling point.

 

From Evans FAQ page

Q. Will Evans Waterless Coolant cause my engine to run at a higher temperature?

A. No. The operating temperature of the coolant may increase slightly, however the temperature inside the engine will be more consistent.

 

The "slightly" bit is slightly under-reported.

 

Assuming ethylene or propylene or similar glycol based coolant with no water (quoted 180deg boiling point and water miscibility reinforce this assumption), we are talking heat capacity of Evans coolant being around 50% that of water, or 30% less than 50/50 water/G12 mix. I.e Evans coolant has to run 30% faster through radiator and engine to achieve the same cooling. Not a problem usually in normal conditions, but I would not use it in a car driven spiritedly (OP said vRS) or for towing, as once the thermostat is fully open you may see temps well in excess of what you are used to.

Edited by dieselV6

It looks like a solution looking for a problem to me.

 

if your cooling system is properly maintained then there is nothing better than demineralised water mixed with the appropriate corrosion inhibitor/antifreeze additive.

 

There is no non-exotic fluid which will outperform water as a cooling medium, this stuff is not exotic but it is expensive and not as efficient.

  • Author

Got them both sitting in the garage now along with everything els!

A customer wanted some put in his car today so was a good excuse to try it out!

Didn't notice any difference in overall temperature or driving etc, but didn't do before and after with live data results.

Time will tell.

What did it do?

on average 6 deg cooler i used 2 bottles of it

Unless you had a block in the system (e.g. stuck thermostat) or e.g. flushed radiator or replaced water pump just prior to fluid change, that is simply not possible.

 

Here is what Evans coolant really is, over 70% ethylene glycol plus additives, just like normal coolant, e.g. G12, or even the old blue one. The less water there is in the mix, the higher running temp it will achieve, and once thermostat is maxed out, it will run hotter than 50/50 mix.

Edited by dieselV6

on average 6 deg cooler i used 2 bottles of it

 
Two bottles is enough to treat 30 ltrs of coolant according to that advert.
 
Have you checked its ok to run it that strong and your not causing damage internally?

An object lesson in the power of sales blurb over scientific fact, incredible.

 

If you want to reduce your engine temperature as low as it can go just run plain demineralised water, anything you add to that reduces thermal transfer and specific heat capacity. Of course your engine will eventually corrode internally and freeze solid in winter but if performance is what you're after then nothing beats pure H2O.

 

That 'water wetter' stuff is snake oil as well, there is no surface tension in a dynamic system.

  • Author

I have been thinking about removing the thermostat for track days as well.

It's all overkill of course, just getting info on things more than anything. Been looking into the oil cooler were the standard intercooler goes to keep oil temps down, that's how I then got onto the coolant temps as well.

 

 
Two bottles is enough to treat 30 ltrs of coolant according to that advert.
 
Have you checked its ok to run it that strong and your not causing damage internally?

 

thats what regal autosport recommend (TOP TUNING COMPANY) runs with no thermostat ali rad, oil cooler, huge intercooler car runs fine 

thats what regal autosport recommend (TOP TUNING COMPANY) runs with no thermostat ali rad, oil cooler, huge intercooler car runs fine 

 

Copied from Regals website my comments in brackets:

 

Benefits Over Water-Based Coolants

Eliminates Overheating

- Evans Waterless Coolants have a boiling point above 180°C and will not vapourise, thus eliminating overheating, boil-over and after-boil. (Not relevant in a turbo diesel application.)

Reduces Pressure

- Evans Waterless Coolants generate very low vapour pressures reducing strain on engine cooling system components.  (Again not relevant or even useful since over-pressurisation generally occurs due to head lift, not overheating.)

Prevents Corrosion

- Evans Waterless Coolants contain no oxygen effectively eliminating corrosion. (Demineralised water with a suitable corrosion inhibition additive also eliminates corrosion, of course they contain oxygen, you can't make the glycol ester without it!)

Increases BHP

- Evans Waterless Coolants eliminate pre-ignition and detonation caused by overheating - thus improving combustion efficiency and delivering more power. (Again not relevant to a turbo diesel application.)

Stops Erosion

- Evans Waterless Coolants prevent cavitation and eliminate liner and cooling pump erosion. (This doesn't happen anyway.)

Freeze Protection

- Evans Waterless Coolants freeze below -40ºC (True, but so does 60/40 water/glycol so not really a tangible benefit.)

Non-Toxic

- Evans Waterless Coolants are proven to be Non-Toxic. Standard anti-freeze is toxic and known to kill pets. (Ethylene Glycol is considered toxic, Propylene Glycol is not which suggests that this formulation is Propylene Glycol based.)

 

To summarise, if your car overheats due to a mechanical failure then this stuff will not boil over until your engine is well and truly cooked, it offers NO OTHER ADVANTAGES and its thermal transfer and specific heat capacity are demonstrably lower than water/glycol.

I can see why the classic car crowd might use it since classics are often barely driven and spend most of their time sitting under a cover in a garage, many classic cars also use ancient rubber pipework for the sake of originality and this stuff is less likely to cause a pipe to rupture. Classic cars also all have PETROL engines as a rule, I genuinely cannot see why you would waste time and money fitting this stuff to a modern turbo diesel,

 

In conclusion then, using this stuff won't do any harm at all and as for the naive remarks about TOP TUNING COMPANY's selling it, are you surprised given the kind of profit margins that probably exist on a harmless cheaply made product sold this expensively!

i have the best of both worlds never said i use it in my derv and mines like a classic its over 450bhp and used 2/3 months of the yr! 

i have the best of both worlds never said i use it in my derv and mines like a classic its over 450bhp and used 2/3 months of the yr! 

 

Geezer, this isn't all about you, this is a Fabia forum and if you look you'll see that the rather gullible Hutchy will indeed be fitting this guff to his derv VRS, I'm simply pointing out that from a technical stance there is no point in wasting yer munny on yet another 'murrican snake oil. Unless you lot are on commission of course. Stop parroting marketing drivel and think about the quality of the advice you give. Your VXR will run cooler on water. End of.

Pretty sure running with no thermostat fitted reduces the cooling system efficiency?

As it doesn't only control the temp of the coolant upto running temp it controls the coolant flow through the radiator.

Running without thermostat reduces engine efficiency as friction losses are higher when oil is cold. For cooling system, removing thermostat means one less restriction so you would get a marginal increase of coolant flow rate and hence cooling ability. Though I guess then it would be prudent to warm up engine prior to start using either a diesel or electric heater... and then run it hard enough (as in race it) to maintain temperature. Still, for a road going car removing thermostat will run engine cold most of the time, increasing wear and fuel consumption so not really a good idea in my opinion.

Edited by dieselV6

It's not just your opinion dieselV6, you're absolutely right because it's a fact.

Geezer, this isn't all about you, this is a Fabia forum and if you look you'll see that the rather gullible Hutchy will indeed be fitting this guff to his derv VRS, I'm simply pointing out that from a technical stance there is no point in wasting yer munny on yet another 'murrican snake oil. Unless you lot are on commission of course. Stop parroting marketing drivel and think about the quality of the advice you give. Your VXR will run cooler on water. End of.

another monkey! have you tried it NO! have i YES! and it works! simple! 

Running without thermostat reduces engine efficiency as friction losses are higher when oil is cold. For cooling system, removing thermostat means one less restriction so you would get a marginal increase of coolant flow rate and hence cooling ability. Though I guess then it would be prudent to warm up engine prior to start using either a diesel or electric heater... and then run it hard enough (as in race it) to maintain temperature. Still, for a road going car removing thermostat will run engine cold most of the time, increasing wear and fuel consumption so not really a good idea in my opinion.

its a track/show car so is driven hard and apart from the gearbox has never broken nor does it loose oil or water drives spot on just cooler with water wetter

  • Author

Got all in the info I wanted now anyway, thanks for all replies, very helpful.

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