[Harlan]

I looked at the Evans NPG fact sheet and then compared it to an off the shelf antifreeze. It was the same stuff in pretty similar per the percentages of PEG and EG with the same boiling point and specific heat capacity. So I used the cheap stuff instead Don't remember what I used, have some of it in my trunk though. So don't let cost be an issue.

Now for the results. My engine runs a few degrees hotter in the middle of summer at high load. I would say less than 5 deg F. The important thing though is that it removed the dry channel effect from my coolant passages and has allowed me to use regular instead of premium. It would probably allow a more advanced timing profile if I tried. Better than that, since it has a higher boiling point I have no fear of boiling my engine which is death for a rotary.