As Evans will not conduct the heat as well as water your car will run hotter but it will not boil, so in summer you will get hotter feet.

Location: Rokeby, Victoria, Australia

I looked at a similar product here a few years back, it significantly raised the operating temperature of the engine due to the poor thermal conductivity. Aside from that in an open cooling system we probably have a responsibility to other road users and should not to use it, it is extremely slippery on a wet road, extremely!

Location: NZ

And, perhaps, more fuel vaporisation!

Yesterday I changed the coolant on my Ulster in preparation for the coming hill climb and sprint season. 1.2 litres of traditional Ethylene Glycol based anti-freeze (£13 for 5 litres from Euro Car Parts) topped up with tap water. Always worked in the past and don't see why it shouldn't continue to do so. Draining off the old coolant that's been in there for 12 months, it came out totally clear with a slight blue tint. No sediment or rust coloured water whatsoever.

Steve

Location: North Yorkshire