Roadracing World™ has an article in the February 2022 issue that covers their attempts over several years to quantify any difference or benefit in running VP Stay Frosty vs. plain water.
Pure water is required in MotoAmerica racing- but it leads to massive corrosion problems and/or increased maintenance to manage its use, or fix damage caused by not draining the water.
Glycol is great at cooling and slipperiness, and enters the story when RW™ tested VP Stay Frosty™ and plain water in a glycol-cooled GSX-R600 at Big Willow.
They ran the bike with each type, flushing and filling four times on each swap, and water was top with VP™ middle and coolant in another position related to the others, but not the same.
There's data in the article, and also the word 'inconclusively'.
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