I’m going to change out my radiator fluid in the 2010 550 Griz. I’m in northern Michigan. It has just over 1000 miles and 88hrs on it. It currently has the blue Yamaha cooling fluid in it.

I’ve been going thru the old threads researching what type of replacement fluid to use. I’ve seen alot discussion about the Engine Ice, the Water Wetter and the Hypo cooling fluid at Walmart. Many of those threads were several years old. Now that many of you have been using these different fluids and put some miles on them, what is the consensus in 2015?

The manual says to use a high quality 1:1 fluid (like Prestone 50/50). I don’t mind buying the other stuff if it is worth it.

Thanks ahead of time….John