One more question about this 2011 rzr 800 I’m looking at. I noticed some old oil around the crankcase breather on top of the valve cover. I couldn’t tell if it was coming from the hose or the device itself. So I questioned the mechanic at the dealer. He told me that they all do that after awhile and it was nothing to worry about. He stated that he has replaced a few, but after awhile they all start leaking again. Is this true?