Do you use radiator coolant?

[EVO-V]

Boiling point of pure glycol is 197C.

30% or 40% mixture with water is 107C. Hence why 30% is fine.

Your typical engine maintains anything from 82-90C. Going pure coolant does not do you any good.

Because if you think that a higher boiling point would mean better heat transfer, you are mistaken. Pure Glycol is less than 50% as conductive as water and is far more viscous thereby also limited by its high surface tension to spread out evenly and transfer heat more effectively.