i went riding today for about 30 minutes and noticed white milky cluid dripping from the breather tube coming from the valve cover. i checked to oil in the tank and checked the radiator and both look great. bike ran great but i noticed the head pipe glowing when it got darker outside. i could blast down my road and the glowing head pipe went away. but anyways has anyone had this unsual color of fliud coming from the vent tube. when i would get some on my finger and rub it together it would lose the white color and look like oil is it foam or something?