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               Originally Posted by 
              tarzan  
              About the oil backingup into the air box is that somethng to worry about?
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         It depends how much actually comes out when you drain it, I've had 1/4 litre before (long time between drains!) I reckon it would take close to a liter before it starts to damage the air filter.
         
        
 If your bike is blowing lots of oil through, and you warrenty then get it looked at.