Anyone know what causes oil to come up the crankcase breather? I am switching to pods and put the little filter on the crankcase breather but I know that when I took the stock box off I had some oil in it (not a lot). I thought I remembered reading that high rpm's can make oil come up. I just was wondering how much if any oil is normal and if its not how to keep it from happening or reduce it. 
My knowledge of internal combustion engines is just slightly above my knowledge of nuclear fusion.(ie: not much)
My knowledge of internal combustion engines is just slightly above my knowledge of nuclear fusion.(ie: not much)