Ok so let's get to the point here.. 17 rmk Assault 1200 miles. Second year having it. Thermostat got stuck closed. I over heated. Temps soared to over 200 degrees and I shut the sled down instantly. Let it cool down and opened side panels and noticed my coolant turned dark green. I sucked some out when I got it back to the garage and noticed it was green but had a black oily residue and you can rub it between your fingers and it goes away.. anyways dealer said it was fine and to flush it in the spring if I was really concerned about it but I am and concerned and I shouldn't have to.. it almost seems to me like exhaust is getting into the coolant. The black residue I found looks exactly like the oil that leaks out of the y pipe. My compression is still 125psi in each cylinder and the sled doesn't over heat anymore but I feel like there was a reaction to the original problem here... Any insights.. I would usually take the head off to inspect and replace o rings but I still have 2 years warranty and I really don't feel like fighting with the dealer.. do I just ride until something happens..
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