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This question is most likely for Graham, but Eric might know.
Is Motul's MoCool legal for LRRS?
I had the opportunity to meet with Motul over the long weekend out in SoCal and this was one of the products I spoke to with their technical product manager.
I explained that LRRS doesn't allow Engine Ice, but allows Water Wetter with water in the rider's radiator.
MoCool is similar, as you add a small amount to a radiator filled with distilled water.
It dries very quickly with heat, if poured onto pavement.
The biggest advantage I saw in comparison to Water Wetter was the cooling additives, as I don't run a fan on my radiator.