I've been using the Evens coolant in my 300 for a few years now and just love the stuff. I like it so much that I'm now using it in my Beta. The only drawback to it is that it expands and spits out just enough to where I end up putting a few ounces in after each ride to get it over the top of the fins when cold. It got the real test this last weekend on the nasty, steep, rocky 1st and 2nd gear trail. It was also hovering in the 90's. I really fought against using it for many years. Of course I have the fan, high output water pump and and hoses. For the type of riding I do, this stuff works great. I'm not trying to "sell" this on anyone here. Just giving another option. Between the Evens, fan, water pump, and hoses, I finally have a bike that doesn't boil over on the nasty stuff. FWIW, this trail I was on was a true test to how this stuff works.