antifreeze

I have a question about my 1997 scrambler 400. I recently rebuilt the top end and the coolant reservoir cap sometimes has a little bit of antifreeze on it after riding it. It doesn't shoot out or anything its just there is a little drop on the cap sometimes. It runs fine and I have been riding...

Ok so I have a 2006 predator 500 with a 560 big bore its running perfect and not smoking or anything but I am getting antifreeze in the oil does anyone have any ideas of what it could be before I start tearing it apart thanks Greg