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It works out that a volume of NPG+ is only 17% less efficient
than the same volume of 50/50. Once hot, the vescosity is not an issue,
being only slightly more viscous than water (no system change usually
necessary).
From the reports I've
seen, it has to be true that there isn't a huge difference in cooling
performance. Ken Welter has already stated that he's changed back and
forth a couple time, and didn't see any real diff in temps. Loads of folks
with RX-7's use it, and also don't report any dire consequences. At
the same time, I'm not sure there are global cooling improvements to be made
either.
I believe the benefit of
being able to run pressure less, coupled with higher boiling point makes it
worth trying for me. Now if I can just find some. Have you
found any good online sources? Most of my normal places don't carry
it.
Cheers,
Rusty (engine repair status- one week down,
and going nowhere fast)
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