Anyone use this fluid on the track? There was only 1 person on that other site that mentioned it, so I don't know if it's legit. They have a snazzy comparison site that shows they're better than motul 600/660, Castrol SRF, etc. I've got 2 bottles of RBF600 left, so I'll need some new fluid this summer. I'd give it a shot this summer to help with higher temps, but only if I can hear from someone that used and liked it.