Airbox Vent
 

Hello,XTers. I have a 1991 XT600 which is running great. Today while I was tinkering the end of the airbox vent tube fell off. After inspecting it I realized this part was made to plug the vent tube. It was only a schrader valve with cap clamped into the tube. My question is ;should there be any fitting at the end of this tube or just open to the breeze? When the plug fell out some blowby oil did spill out but I have no idea how long the tube has been plugged. The oil could have been acculating long before I got it last year.The bike has 47K on it and may have some blowby but I haven't noticed any drop in oil level.