I serviced my 2015 Explored this past weekend and everything went well. When I checked the fluid level in the radiator the fluid has a definite black color to it. The bike has 63,000 miles (101,388 km) and has been serviced regularly but not this problem showed up.
I had a similar problem with my 2012 Explorer at about 90,000 miles (144,840 km). I ended up replacing hoses and fluid.
Has anyone else had this issue? The bike does not run hot but I know this is not normal. Could the be the HOAT fluid going bad?
I am going to replace the fluid this weekend but still somewhat concerned.