I drilled a hole in the backing plate, routed the breather hoses into 1, and ran the single hose through the backing plate. The hose routes towards the front of the engine and empties under the bike. Yes, it is visible, but the black hose isn't noticeable unless you look for it. The air cleaner assembly operates under negative pressure so it actually pulls oil and moisture out of the crankcase. I was using a fair amount of oil before I relocated the breather hose. Now, with no negative pressure acting on the breathers, I don't use any oil. I'm sure the carbon buildup on my pistons is now gone as well. Took about 45 minutes from start to finish, and maybe 10$ in parts.

 

I am not disagreeing here. I am asking a question.

When you are driving down the road, the air passing the additional hose, the end of which is at the bottom of the bike, does not cause a vacuum, similar to a Venturi Effect? Sucking oil from the crank case?

Perhaps, if not, it is because of where you have terminated the hose. Where did you terminate the hose?

 

Yes, it does. But far less vacuum than would be applied if it was inside your air cleaner.

 

Since the change does you bike "mark it's spot"? Leave an oil spot on the floor/ground when parked?

You said you are not using oil so I am guessing it should not be doing so. But... wanted to ask.

 

No, the only difference I notice is more 'road film' on the oil pan and bottom of frame. I'm the only one that sees that, other than the photographer at deals gap.... ;-)