sub transmission vent line not crank case. lol my bad on that I forget it has a sub transmission. I think fuel vapor caused dust to settle on the vent lines. kinda scared me I did something wrong.Remind me again, when you say crank case what are we talkin.?
Is that the rubber hose that used to go to the air box (air filter box)?
Ok, that sounds better.
Some guys are running chain saw fuel filters as a vent filter - it fits on the end of the tube.
Also there are differential vent filters used by off road truck/Jeep crowd.