Have you tried this? Though I have not had heating issues I may give it a run after a bit more research. The chart does not compare this product to standard anti-freeze/coolant. But you'd assume it would be higher than any of the tested products. Then again, you know what ASSUME(ing) will get you!
An important item that is always a question with high performance coolant products is boil-over and freeze protection. This one has very good numbers in that respect also.
- Note: Boiling point protection up to 260°F (126.6°C); freezing point protection down to -30°F (-34°C).
I am not promoting or even recommending this product because I have not tried it myself. But it does look very interesting.