Interestingly these waterless coolants also run the system at in effect zero pressure, you can take the header cap off when the system is up to temperature without scalding yourself..
However the systems are designed to run at pressure, therefore I am not sure this is a good thing.
For me it seems a big waste of time when BMW spend millions developing their cars. I have never heard of someone having a failure that would have been avoided using a non-standard anti-freeze.
