Coolant

Adding coolant additives such as Engine Ice and Water Wetter (not sure about the exact names), was common on the early TERYXs. I think improvements were made to the cooling systems after the 1st model year(2008), they were known to run hot.

Mike

I've been thinking about adding it to my 2016. She still likes to get warm on a long run and will often kick the temp light on, particularly if its hot outside. And this is despite the fact that I work very hard to keep the radiator clean. I just have no experience with these products so not sure how much, or if, it would help?