A warning about Evans Waterless Coolants

Evans coolant is just a form of glycol that you don't add water to. So chemically, it is the same or similar base as regular antifreeze.

Glycol does not have as good a heat transfer as water, so the heat flow out of the heads is less and they will be hotter. This is a known factor. I have not read that they will be 140 degrees hotter, but maybe a few 10's of degrees hotter. However, the boiling point of glycols is a lot higher than water so the one supposed advantage of something like Evans is that local hot spots in the heads will not cause localizing boiling of the coolant as readily. This keeps the air in the coolant down and is part of the lower pressure in the system.

I have not ever read anything about Evans 'sticking' to the internals. But as a glycol, it is presumably going to break down over time to some degree or another with heat. So maybe that is what is going on... just speculating though.

Do you have any reference links to the supposed 'sticking' and build-up problems?