cheers ive just took it off and emptied it theres an allen key release on the bottom of it but now ive emptied it the breather pipe goes on and then theres another top hole for the k&n breather filter but there must be tomuch pressure as the dirty oil just bounces off the bottom of the tank str8 out the k&n breather filter so im just woundering whether replacing that with a proper lid to stop it shooting str8 out dont think this will do any harm there is a gauge on the back to tell me when its full