Waterless coolant?

[kvom]

I recently became aware of a product called 'Evans Waterless Coolant'.  Has anyone used this either in their offroad vehicles or DD?  The advantages seem to be that it's non corrosive and has a much higher boiling point, so lower pressure and no boilovers.  Disadvantage is mainly cost ($45/gallon).

[Mortalis5509]

I think the curries use it. Some trophy truck teams do. I have read about it some.

If it's a new engine you don't have to flush. If it's not, then I think you need to run a flush.



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[kvom]

After some research I think a better solution for me is a product call HyperKuhl along with distilled water, at least in hot weather.  Downside is that it doesn't offer antifreeze protection.

Main issue, other than cost, with Evans product is that coolant itself will be hotter so that ECU would need reprogramming.

[bjeep]

Kvom is this on the TJ buggy?

If so, with two radiators you still can't keep it cool?

[kvom]

I have to turn on the rear radiator fan when the temp gauge gets high, and it's really noisy.  Plus sometimes I've failed to notice until it gets hot, and then I have to let it sit until it cools down again.  Biggest problem I had with it were was in Moab.  Plain water has greater specific heat capacity than 50/50 antifreeze, so it should provide better cooling.  The HyperKuhl additive just adds corrosion protection.

But plain water can freeze, so I'd need to drain and replace in winter.

I may try it next year.

[bjeep]

Make the computer turn the fan on and off.  //???//

Problem solved......

[kvom]

I'd prefer not to have to run it at all.

[patman]

I'd prefer not to have to run it at all.

The fan? Or a second radiator?

[kvom]

fan.

[Mortalis5509]

Set your system up with 1 radiator with a good fan. I had that dual radiator with auto fans and I wasn't a fan of it in that tj. Still get warm but not hot.

Get a good brand radiator in the front. Then run an oil cooler with a fan. Inline theromost before the oil cooler to control the fan. Plumb the accumulator in after the oil cooler. If the motor is getting hot, the oil is really pushing some temps then.

Make sure your radiator overflow is the highest point in the coolant system. Next, run a steam vent for the front ports, rear really not needed. Do Not plumb the steam vent into the water pump because you have defeated the purpose of even doing it. Run the steam vent to the highest point in the over flow. It's there to help get the air out.

That should help with heating issues. Side note, dead head fuel systems like most ls are not much of a help when everything is being heat soaked. Can boil the fuel in the fuel rails.

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[Mortalis5509]

Yea forgot this.

You can run red line water wetter with distilled water for coolant. Like you stated it will cool better. The water wetter is the lubricant for the pump.

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