There's a rubber plug on that thing? I've changed my oil since 10,000 miles and there's never been one there. Oh well LOLAlso, if you feel under that metal cup that sort of surrounds the oil filter, there is a rubber plug/cap. Pull it off and stick an empty water bottle under there to catch the oil from the filter. After a couple of times you won't spill any oil at all. Also, so I don't lose the rubber cap, I stick it on one of the nuts that holds the engine cover on - fits perfectly.