Waterless coolant

[AndyP]

Saw this on the new Wheeler Dealers this week, any body used it? They make some pretty bold claims for it.

http://www.ebay.co.uk/itm/Evans-Powe...item2c6309331b

[Error404]

It better be good for £100 to fill the system!

[SteveH]

Yeah and expensive if you spring a leak in the system like I have twice in the past week!

If I could get my hands on a sample I'd send it off to my boy who's at Reading Uni studying chemistry. He could stick it through their machines to see what it actually is.

[Jamo]

This kind of thing has been around a while however one thing that is interesting on the advert is that standard coolant should be changed every 3-5 years? is this correct?

Not a worry on the S2 with the amount of leaks they spring though

[Error404]

Service schedule for Helen's S4 says every 4 years IIRC so sound about right

[mcandmar]

Seen this stuff before and i'm not convinced. There aren't many fluids that can transfer heat as well as plain old water, hence you should never fill a car with just anti-freeze alone. I always use battery top up water, or de ionized water as the tap water we get is full of lime and other minerals. A combination of that and halfords best anti-freeze has lasted over three years in my car and is only now starting to show signs of rust colour. I know that for sure as my expansion tank let go the other week and sprayed it everywhere. I say stick to that recipe and change it every year if your really fussy, would still be cheaper than one fill of that stuff.

[merlin's S4]

De-ionised water and G12+

[will20v]

its g13 now

[bluequattro]

I ve read about this recently I'm a classic car mag.
First thing I thought is what happens when a leak occurs or something needs changing-stat etc, it will still need a top up-expensive
The flush can be reused but unless you use a lot of cars or are a garage it's useless

[4WheelDrifter]

Service schedule for Helen's S4 says every 4 years IIRC so sound about right

I always change the coolant when I change the cambelt, so that would also tally.
I've got a sneaky feeling it's old coolant that corrodes the water pump spindle, causing the impellers to break up on those new fangled Chinese quality Audi pumps. I think I still have an original water pump in the 12 year old A3, so something has worked so far.

Porsche use a 'filled for life' coolant on their water cooled engines. With ~20 litres capacity it can end up a costly job to change it.

I can't see that there is a problem with using good old G12++, or WHY. I think something else probably needs sorting on your car, if you feel you need coolant to be able to run at 180°C.

[JariP]

Glycol-based coolants get corrosive after some years of use, atleast the cheap basic green stuff. The later different color "lifetime fill up" versions are supposed to be less corrosive over time but I don't think even them last forever. Some say that you can check the coolants condition with voltage meter, one pin to ground and other to coolant tank (in to the liquid). Can't remember what the voltage limit was for a recommend to change the coolant, but it was something in the range of 10-20 millivolts.

[johne]

"Evans Waterless Coolants contain little oxygen and are comparatively poor conductors in comparison to water based coolants."

.....which means your engine is going to run hot and even if you've got a large excess of radiator capacity which we haven't, you're going to get local hotter hotspots in your clyinder head

Can't see the point, there's better things to spend our money on, starting with G12+/G13!

John

[2226]

Evans Cooling

This stuff works, but is exspensive.

It is true that water has a higher heat absorption capacity but this stuff only boils at 180°C. Because it doesn't start to convert to steam at 100°C there is no pressure in the coolant system - NONE -

Of coarse with conventional coolant if the coolant system is in order and keeps pressure the boiling point will rise and less readily convert to steam.

It was impressive to open the exspansion tank cap during full running temperature and not have coolant spewing out. I used it as a temporary fix on a leaking radiator before having to travel 2000km's. The car seamed to have more torque and definately ran cooler. Unfortunately it will leak around your waterpump impeller seal if it is warn - normal pressurized coolant forces the shaft seal to close better under pressure.

Here in RSA I could only get it through the Rotax dealership which specs it as OE in some of their engines.