I don't know, but i just put some water wetter stuff in my radiator on my 2002 Yamaha R1. Just learned what this stuff was on this forum. It says it cools running temps a few degrees. I've always noticed that my sport bike will absolutely haul tail in cool temps as compared to a hot day. Today it was 70 F. It only got up to about 168 on the temp guage on the bike. I think it usually gets up to the 180's. I can't recall though, because i never really looked at it. Anyway, i noticed the bike seemed faster after i did it, or it could all be in my head, which i don't think. It cost about 8 bucks at Pep Boys. I added about half of the bottle. I just sucked about 6 ounces or so out of my radiator with a straw, and then added it. Sportbikes have always been bad about running hot in hot temps. That's why i did it, and me knowing they run a heck of a lot better at cooler temps.