Looking to run up Holland River today onto Simcoe and access the 413 trail off the lake in Barrie. Anything I should be on the lookout for, ice safe all the way up?   TIA Steve  

Could be that your dealer isn’t bleeding your system after working on it???  To do so you have to elevate the front right side of the sled and run it like you’re saying.  If not elevated air can get stuck in the heat exchanger.  I’ve done that and my coolant levels are stable.  

Gas in town Kearney

4 strokes run warmer then a 2 stroke. 65 to 85 ish would be normal for sure. All depends how much snow and air is hitting exchangers.  What I find if it gets up into 90's you should pull over shut sled off. Take off coolant cap and usually it girdle air and sometimes coolant over flow out bottle. When it's done acting up. I start sled with cap off run it up to a fast idle. Then shut it off. Put cap back on. Usually run 10 C cooler if there is air in system. Not sure why these brp 4 strokes are prone to air lock. I have had it happen a few times, about 3 times. Usually happens when I get it back from service. 

Not familiar with riding a modern MachZ but I cant stress enough how important set up is. I used to invest a ton of hours in trailside side adjustments while riding the same section of trail over and over. Try front shock adjustment first. If it's to soft you will nose into the corners and make the steering heavy. Let the limiter out to far and you will just plow through the corners. The steering can get to light. A well setup sled is worth the effort.