Waterless Coolant

In other words, if it ain't broke, don't fix it.

Evans does make a good product though and is highly recommended.

 

This seems like something Toyota should look into, @Prius Team . If they tested it, endorsed it, and installed it in their vehicles at the factory, and declared the coolant "lifetime", that'd be a good selling point I think.

 

That would expose Toyota to any liability if it did not last "lifetime" What business benefit is there to Toyota to help sell a third party product when the current Toyota one is adequate for the expected 100K mile vehicle life?

 

Toyota will just tell us to use their own coolant. Why would they spend money so that you can use coolant made by a different company?

 

I use Evans in my motorcycle. There are down sides to consider.

1. It’s pricy.
2. You must purge ALL water from the system and use a pre-flush they sell before initial use or if water is ever added to the system.
3. If you have a coolant loss, you can’t add antifreeze or water. So, you better keep an extra bottle handy.

Now, to be fair...

1. There is nearly no reason to ever replace the coolant.
2. It can be recovered and reused if you have a spotless container to collect it when draining the system.
3. If you’d feel better replacing the coolant from time to time, it’s a simple drain and fill. No cleaning or flushing should be needed.

Frankly, it’s a product you’d use out of need. The Toyota coolant is specially formulated and is pretty much drain and fill already. My motorcycle had issues mostly from a failed thermostat, but it’s designed to run hot, and if the coolant ever starts to boil, it’s game over. Going waterless was a good move in this case.

 

Good to know. So still nobody in this forum has used Evans waterless coolant yet? Sorry about digging the old threads.

 

i've never read of anyone

 

In most likely case scenerio and most realistic answer;

It will do almost nothing to your car than the coolant you already have. But it will part you ways with your money.

All those pros are great. But i have never heard someone say "yea my prius is dead because the coolant corroded my engine". Original coolant isnt exactly known for being a issue like say a headgasket for example. And i get the trying to get better fuel economy, but i believe the coolant pump is always circulating on these things when engine is in motion and/or certain temp has reached. I dont see it achieving anything more than 1mpg if that.

 

Does waterless coolant have the same or better thermal conductivity as a 50-50 mix of ethylene glycol and water?

 

Besides conductivity, other properties that determine cooling ability of a liquid coolant include its specific heat, density, and viscosity. How 'bout those?