why?
Not that it really matters but I'd also suggest Engine Ice, some of the best stuff out there.Refill with engine ice.
Engine Ice solved most over heating issues for me. If your going to put 50/50 premix in might as well use the good stuff that helps with overheating issues.
It's a KTM thing. Not my Husky or Beta have ever had an issue. But I also run the Ice.
Bring both of those bikes to the woods we ride and you will have overheating issues.
I use 3rd through 6th, I forgot about that 2nd gear shit you ride all the time. But they do both have fans....