I've switched my standby generator over to it, it seems to work fine. Keep in mind that there are several versions of NPG depending on the application. It is necessary to have virtually all the water removed from the system. The drained prep fluid can be checked with a refractometer to verify that. I had several questions and I emailed Evans, and had a phone call in less than 15 minutes from the same guy in the Jay Leno video. They don't want to sell direct, they want you to use a dealer.
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ant.com is the UK website. My signature car will be the next to get it. With a boiling point of 370*, you don't need a pressurized system.