There's a temp gauge on these sleds?

Yes for sure.  I am not talking about CIL overhaul for Marketplce or kijiji.   Engine, pumps, and drive motors rebuilt.  Maybe upgrade some of the electronics?  Crawlers and drive motors?   It depends on having  dedicated facility to do the rebuild also   

Yeah for how long before there is an issue?   And minor or major?      I know there were no DEF issues before 2015 or 2016.   

I think it was ScottyR mentioned the Boot in Blyth instead of Cowbell. My buddy and I left around 830am from St Jacobs. Went through Milverton, Mitchell, Seaforth and had lunch in Blyth. Trails were mostly groomed and nice riding. Came back through Atwood, Conestogo Lake. A bit choppy around Conestogo Lake but I’ve seen plenty worse. All in all, a good day. 275 kms and home by 4pm. Only one issue which I laid out in the Tech forum.    

It is imperative to ensure def tank heaters are functional. We have no def issues running in -35 .